def IsAbecedarianWord(strWord) :

    for nLoop in range(0, len(strWord) - 1) :
        if strWord[nLoop] > strWord[nLoop + 1]:
            return False

    return True


## print (IsAbecedarianWord("a"))

outFile = "AbecedarianWordList.txt"

with open("Dictionary.txt") as objFile:

    for LineLoop in objFile:

        LineLoop = LineLoop.strip()

        ## print (LineLoop)
        ## print (len(LineLoop))
        ## print (IsAbecedarianWord(LineLoop))

        if  IsAbecedarianWord(LineLoop):

            ## print (LineLoop)
            with open(outFile, "a") as objOutFile:
                objOutFile.write(LineLoop)
                objOutFile.write("\n")

        ## break


## Result:
## a
## abbey
## abbot
## abet
## abhor
## abhors
## ably
## abort
## accent
## accept
## access
## accost
## ace
## aces
## act
## ad
## add
## adds
## adept
## ado
## adopt
## ads
## affix
## afoot
## aglow
## ago
## ah
## ahoy
## ail
## ails
## aim
## aims
## air
## airs
## airy
## all
## allot
## allow
## alloy
## ally
## almost
## alms
## am
## amp
## amps
## an
## annoy
## ant
## any
## apt
## art
## as
## ass
## at
## ax
## be
## bee
## beef
## beefs
## beefy
## been
## beer
## beers
## bees
## beet
## befit
## beg
## begin
## begins
## begs
## bell
## bellow
## bells
## belly
## below
## belt
## bent
## berry
## best
## bet
## bill
## billow
## bills
## bin
## bins
## bit
## blot
## blow
## boo
## boor
## boors
## boos
## boost
## boot
## booty
## bop
## boss
## bossy
## bow
## box
## boy
## buy
## buzz
## by
## cc
## cell
## cello
## cellos
## cells
## cent
## chi
## chill
## chills
## chilly
## chimp
## chimps
## chin
## chins
## chintz
## chip
## chips
## choosy
## chop
## choppy
## chops
## chow
## city
## clot
## coo
## coop
## coops
## coos
## cop
## cops
## copy
## cost
## cot
## cow
## cox
## coy
## crux
## cry
## cs
## deem
## deems
## deep
## deeps
## deer
## deft
## defy
## deity
## den
## dens
## dent
## deny
## dew
## dill
## dills
## dim
## dims
## din
## dins
## dip
## dips
## dirt
## dirty
## ditty
## do
## door
## doors
## dos
## dot
## dry
## eel
## eels
## effort
## egg
## eggs
## ego
## egos
## eh
## elm
## elms
## em
## empty
## envy
## err
## errs
## fill
## fills
## filly
## film
## films
## filmy
## fin
## fins
## fir
## firs
## first
## fist
## fit
## fix
## fizz
## floor
## floors
## flop
## floppy
## flops
## floss
## flow
## flu
## flux
## fly
## foot
## for
## fort
## forty
## fox
## foxy
## fry
## fuzz
## ghost
## gill
## gills
## gilt
## gin
## gins
## gist
## glory
## gloss
## glossy
## glow
## gnu
## go
## goo
## gory
## got
## guy
## hi
## hill
## hills
## hilly
## hilt
## him
## hims
## hint
## hip
## hippy
## hips
## his
## hiss
## hit
## ho
## hoop
## hoops
## hoot
## hop
## hops
## host
## hot
## how
## ii
## iii
## ill
## ills
## imp
## imps
## in
## inn
## inns
## ins
## is
## it
## iv
## ivy
## ix
## jot
## joy
## knot
## knotty
## know
## loop
## loops
## loot
## lop
## lops
## lorry
## loss
## lost
## lot
## low
## m
## moo
## moor
## moors
## moos
## moot
## mop
## mops
## moss
## mossy
## most
## mow
## ms
## mu
## my
## no
## nor
## nosy
## not
## now
## opt
## or
## ox
## pry
## qt
## x
## xx
## xxx