naive-search.pl

use v5.14;
use Sort::Key::Top 'nkeytopsort';

sub sort_letters {
	my @letters = split '', $_[0];
	join '', sort @letters;
}

sub can_make {
	my ($letters, $word) = @_;
	$word = join '.*', sort split '', $word;
	$letters =~ qr{$word};
}

say "Reading words from dictionary...";
open my $dict, '<', '/usr/share/dict/words';
chomp( my @WORDS = map lc, grep length($_) <= 9, <$dict> );

say "Scoring microcombinations...";
my %SCORE; $SCORE{ sort_letters($_) }++ for @WORDS;
my @GOOD = nkeytopsort { $SCORE{$_} } -40 => keys %SCORE;

say "Generating candidate answers...";
my %CANDIDATES;
for my $x (@GOOD)
{
	for my $y (@GOOD)
	{
		for my $z (@GOOD)
		{
			my $letters = sort_letters substr("$x$y$z", 0, 8);
			$CANDIDATES{$letters}++;
		}
	}
}
my @VERYGOOD = nkeytopsort { $SCORE{$_} } -40 => keys %CANDIDATES;

say "Finding best candidate answer...";
my %RESULTS = map {
	my $letters  = $_;
	my @can_make = grep can_make($letters, $_), @WORDS;
	say "   $letters - ", scalar(@can_make);
	$letters => \@can_make;
} @VERYGOOD;
my ($BEST) = nkeytopsort { scalar @{$RESULTS{$_}} } -1 => @VERYGOOD;

say "BEST: $BEST";
say for sort @{$RESULTS{$BEST}};

output.txt

Reading words from dictionary...
Scoring microcombinations...
Generating candidate answers...
Finding best candidate answer...
   aceeinrs - 195
   'aeelnns - 100
   aeeinrst - 285
   aadeelnn - 92
   aegimnrs - 320
   eeeinrst - 144
   adeeegnr - 134
   aaceelst - 139
   aopprsst - 152
   eeiimnst - 118
   aenoprst - 398
   eilmopst - 268
   aeimprst - 405
   adelopst - 336
   aeginprs - 315
   aaepprst - 177
   aeeilmst - 259
   abdeelno - 192
   adeeilmr - 236
   aeoprsst - 313
   aeelprss - 212
   aceenrst - 275
   aeoprrst - 274
   adeeelrs - 150
   eeeilmrs - 116
   aefmorst - 296
   adeimrst - 384
   abdeerst - 275
   abdeinrs - 361
   adeelprs - 269
   aeeimrst - 288
   aceinost - 285
   einoprst - 344
   aaceenrs - 132
   eginoprs - 255
   aeeegrst - 151
   eeiinnst - 74
   eeeilrst - 129
   aeinprst - 426
   aeginrst - 378
BEST: aeinprst
a
a
air
airs
an
ani
anise
ant
ante
antes
anti
antis
ants
ape
apes
apr
apse
apt
apter
ar
are
ares
ares
aries
arise
arisen
art
art
artie
arts
as
as
asp
aspen
aspen
aspire
aster
astern
astir
at
at
ate
ats
e
e
ear
earn
earns
earp
ears
east
east
eat
eats
entrap
entraps
er
era
eras
erin
eris
erna
ernst
es
es
eta
etna
i
i
ian
in
in
ina
inapt
inept
inert
ines
ins
insert
inset
instep
inter
inters
ir
ira
iran
irate
ire
is
it
it
its
n
n
na
nair
nap
nape
napes
napier
naps
napster
nastier
nat
nate
ne
near
nears
neat
nest
net
nets
ni
nip
nips
nit
nita
nite
niter
nites
nits
np
p
p
pa
pa
pain
paine
pains
paint
painter
painters
paints
pair
pairs
pan
pan
pane
panes
panier
paniers
pans
pant
pantie
panties
pantries
pants
par
pare
parent
parents
pares
paris
pars
parse
parsi
part
parties
parts
pas
past
paste
pastern
pastier
pat
pat
pate
pate
pates
patine
pats
pea
pear
pears
peas
peat
pei
pen
pena
penis
pens
pent
per
persia
persian
pert
pertain
pertains
pest
pet
petra
pets
pi
pie
pier
piers
pies
pin
pine
pines
pins
pint
pinter
pints
pirate
pirates
pis
pisa
pit
pita
pits
praise
prate
prates
prensa
pres
pries
priest
print
prints
pt
r
r
ra
rae
rain
rains
raise
ran
rant
rants
rap
rape
rapes
rapine
rapist
raps
rapt
rasp
rat
rate
rates
rats
re
re
reap
reaps
rein
reins
reis
rena
rent
rents
rep
rep
repaint
repaints
repast
reps
resin
rest
retain
retains
retina
retinas
rinse
rip
ripe
ripen
ripens
ripest
rips
rise
risen
rita
rite
rites
rn
rs
rte
s
s
saint
san
sane
saner
sap
sap
sapient
sari
sat
sat
sate
satin
satire
se
sea
sean
sear
seat
sen
sent
sepia
sept
septa
sera
set
set
si
sian
sin
sine
sip
sir
sire
siren
sit
sitar
site
sn
snap
snare
snip
snipe
sniper
snit
spa
spain
span
spar
spare
spat
spate
spear
spent
spin
spine
spinet
spire
spirea
spit
spite
sprain
sprat
sprint
sprint
sprite
sprite
sr
st
stain
stair
stan
star
stare
stein
stein
step
stern
stern
sterna
stine
stir
strain
strap
strep
strip
stripe
t
t
ta
taine
tan
tans
tap
tape
taper
tapers
tapes
tapir
tapirs
taps
tar
tare
tares
tarp
tarps
tars
tea
tear
tears
teas
ten
tens
teri
tern
terns
ti
ti
tia
tie
tier
tiers
ties
tin
tina
tine
tines
tins
tip
tips
tire
tires
train
trains
traipse
tran
trap
traps
tries
trina
trip
tripe
trips
ts
tsar