gistfile1.txt

```
with open('/usr/share/dict/words') as f:
     words=set([x.strip() for x in f])
words = words - set('in' + x for x in words)
inwords = set(x for x in words if x.startswith('in') and not x.endswith("s") and not x.endswith("ed"))
```
in
inadvertence
inadvertent
inadvertently
inamorata
inane
inanely
inaner
inanest
inanity
inasmuch
inaugural
inaugurate
inaugurating
inauguration
incalculably
incandescence
incandescent
incantation
incapacitate
incapacitating
incarcerate
incarcerating
incarceration
incarnate
incarnating
incendiary
incense
incensing
incentive
inception
incessant
incessantly
incest
inch
inching
inchoate
incidence
incident
incidental
incidentally
incinerate
incinerating
incineration
incinerator
incipient
incise
incising
incision
incisive
incisively
incisor
incitement
inclination
incline
inclining
include
including
inclusion
inclusive
inclusively
incognito
incommunicado
incomprehensibly
incongruously
inconsequentially
inconsolable
incontestable
incontestably
incontrovertible
incontrovertibly
inconveniencing
incorporating
incorrigibility
incorrigible
incorrigibly
incorruptibility
increasingly
increment
incremental
incriminate
incriminating
incrimination
incriminatory
incrustation
incubate
incubating
incubation
incubator
incubi
inculcate
inculcating
inculcation
inculpate
inculpating
incumbency
incumbent
incurably
incurring
incursion
indefatigable
indefatigably
indefensibly
indefinably
indelible
indelibly
indemnification
indemnify
indemnifying
indemnity
indentation
indenturing
independently
indescribably
indestructibly
indeterminacy
indeterminately
index
indexing
indicate
indicating
indication
indicative
indicator
indict
indictable
indicting
indictment
indigence
indigent
indignant
indignantly
indignation
indigo
indiscriminately
indispensably
indisputably
indissoluble
individual
individualism
individualist
individualistic
individuality
individualize
individualizing
individually
indivisibly
indoctrinate
indoctrinating
indoctrination
indolence
indolent
indolently
indomitable
indomitably
indorse
indorsement
indorsing
indubitable
indubitably
induce
inducement
inducing
inductance
inductee
induction
inductive
induing
indulge
indulgence
indulgent
indulgently
indulging
industrial
industrialism
industrialist
industrialization
industrialize
industrializing
industrially
industriously
industry
inebriate
inebriating
inebriation
ineffable
ineffably
ineluctable
ineluctably
inept
ineptitude
ineptly
inert
inertia
inertial
inertly
inescapable
inescapably
inestimably
inevitability
inevitable
inevitably
inexcusably
inexhaustibly
inexorable
inexorably
inexplicably
inextricable
inextricably
infamy
infant
infanticide
infantile
infantry
infantryman
infantrymen
infarction
infatuate
infatuating
infatuation
infect
infecting
infection
infectiously
inference
inferential
inferior
inferiority
infernal
inferno
inferring
infestation
infesting
infidel
infiltrator
infinitesimal
infinitesimally
infinitive
infinitude
infinity
infirmary
infirmity
inflammation
inflammatory
inflatable
inflate
inflating
inflation
inflationary
inflect
inflecting
inflection
inflectional
inflict
inflicting
infliction
inflorescence
influence
influencing
influential
influentially
influenza
info
infomercial
informant
informational
infotainment
infrastructure
infringement
infuriate
infuriating
infuriatingly
ingeniously
ingenuity
ingenuously
ingest
ingesting
ingestion
ingraining
ingratiate
ingratiating
ingratiatingly
ingredient
ingénue
inhabitant
inhabiting
inhalant
inhalation
inhalator
inherent
inherently
inhering
inherit
inheritance
inheriting
inheritor
inhibit
inhibiting
inhibition
inimical
inimically
inimitable
inimitably
iniquity
initial
initialing
initialization
initialize
initializing
initialling
initially
initiate
initiating
initiation
initiative
initiator
inject
injecting
injection
injector
injure
injuring
inkblot
inkier
inkiest
inkling
inkwell
inky
innate
innately
inner
innermost
inning
innkeeper
innocence
innocent
innocently
innocuously
innovate
innovating
innovation
innovative
innovator
innuendo
innumerable
inoculate
inoculating
inoculation
inordinate
inordinately
inquirer
inquiring
inquiringly
inquiry
inquisition
inquisitive
inquisitively
inquisitor
insatiable
insatiably
inscribing
inscription
inscrutable
inscrutably
insecticide
insectivore
inseminate
inseminating
insemination
insensate
inseparability
inseparably
insert
inserting
insertion
insider
insidiously
insightful
insigne
insignia
insinuate
insinuating
insinuation
insipid
insist
insistence
insistent
insistently
insisting
insofar
insolence
insolent
insolently
insomnia
insomniac
insouciance
insouciant
inspect
inspecting
inspection
inspector
inspiration
inspirational
inspiring
instal
installation
installment
instalment
instancing
instant
instantaneously
instantly
instigate
instigating
instigation
instigator
instil
instinct
instinctive
instinctively
institute
instituting
institution
institutional
institutionalize
institutionalizing
instruct
instructing
instruction
instructional
instructive
instructively
instructor
instrument
instrumental
instrumentalist
instrumentality
instrumentation
instrumenting
insufferable
insufferably
insular
insularity
insulate
insulating
insulation
insulator
insulin
insult
insulting
insuperable
insurance
insurgence
insurgency
insurgent
insuring
insurrection
insurrectionist
intagli
intaglio
integer
integral
integrate
integrating
integration
integrator
integrity
integument
intellect
intellectual
intellectualism
intellectualize
intellectualizing
intellectually
intelligence
intelligent
intelligently
intelligentsia
intelligibility
intelligible
intelligibly
intensification
intensifier
intensify
intensifying
intensity
intensive
intensively
intention
intentional
intentionally
intently
inter
interact
interacting
interaction
interactive
interactively
interbreeding
intercede
interceding
intercept
intercepting
interception
interceptor
intercession
intercessor
interchange
interchangeable
interchangeably
interchanging
intercollegiate
intercom
interconnect
interconnecting
interconnection
intercontinental
intercourse
interdenominational
interdepartmental
interdependence
interdependent
interdict
interdicting
interdiction
interdisciplinary
interest
interesting
interestingly
interface
interfacing
interfaith
interfere
interference
interfering
interferon
intergalactic
interim
interior
interject
interjecting
interjection
interlace
interlacing
interlard
interlarding
interleave
interleaving
interleukin
interlink
interlinking
interlock
interlocking
interlocutory
interloper
interlude
interluding
intermarriage
intermarry
intermarrying
intermediary
intermediate
interment
intermezzi
intermezzo
interminably
intermingle
intermingling
intermission
intermittent
intermittently
internal
internalize
internalizing
internally
international
internationalism
internationalize
internationalizing
internationally
interne
internecine
internee
internement
interneship
internet
interning
internist
internment
internship
interoffice
interpersonal
interplanetary
interplay
interpolate
interpolating
interpolation
interpose
interposing
interposition
interpret
interpretation
interpretative
interpreter
interpreting
interpretive
interracial
interrelate
interrelating
interrelation
interrelationship
interring
interrogate
interrogating
interrogation
interrogative
interrogator
interrogatory
interrupt
interrupting
interruption
interscholastic
intersect
intersecting
intersection
intersperse
interspersing
interstate
interstellar
interstice
intertwine
intertwining
interurban
interval
intervene
intervening
intervention
interview
interviewee
interviewer
interviewing
interweave
interweaving
interwove
interwoven
intestinal
intestine
intimacy
intimate
intimately
intimating
intimation
intimidate
intimidating
intimidation
intonation
intoxicant
intoxicate
intoxicating
intoxication
intractability
intramural
intransigence
intransigent
intravenously
intrenchment
intrepid
intrepidly
intricacy
intricate
intricately
intrigue
intriguing
intriguingly
intrinsic
intrinsically
introduce
introducing
introduction
introductory
introspection
introspective
introversion
introvert
intrude
intruder
intruding
intrusion
intrusive
intuit
intuiting
intuitive
intuitively
inundate
inundating
inundation
inure
inuring
invade
invader
invading
invaliding
invasion
invasive
invective
inveigh
inveighing
inveigle
inveigling
invention
inventive
inventor
inventory
inventorying
inversely
invert
inverting
investigate
investigating
investigation
investigative
investigator
investiture
investor
inveterate
invidiously
invigorate
invigorating
invigoration
invincibility
invincible
invincibly
inviolability
invitation
invitational
invite
inviting
invitingly
invoke
invoking
involve
involvement
involving
inwardly