brain is 501 hops away path from 'smart' to 'brain' smart -> start -> stare -> scare -> scale -> scalp -> scamp -> scams -> scabs -> slabs -> blabs -> blats -> beats -> beads -> beady -> beaky -> leaky -> leafy -> leafs -> leans -> deans -> deals -> dells -> bells -> balls -> bails -> baits -> gaits -> gains -> grins -> grids -> grads -> glads -> clads -> clams -> clamp -> champ -> chimp -> chime -> chile -> chill -> shill -> shall -> shalt -> shaft -> shift -> shirt -> shire -> shine -> shins -> chins -> chink -> chick -> check -> cheek -> cheep -> cheap -> cheat -> chert -> chart -> chard -> chord -> chore -> chose -> chase -> cease -> lease -> leash -> leach -> beach -> belch -> welch -> wench -> tench -> tenth -> tents -> cents -> cants -> canes -> banes -> bakes -> baked -> baled -> baler -> barer -> borer -> boner -> boned -> boded -> bided -> aided -> added -> adder -> alder -> alter -> aster -> asker -> asked -> acked -> ached -> aches -> ashes -> asses -> esses -> eases -> eased -> cased -> caged -> cager -> caper -> coper -> coder -> ceder -> seder -> sever -> fever -> fewer -> hewer -> hewed -> hawed -> hated -> dated -> dared -> dares -> dales -> doles -> doges -> loges -> lobes -> lobed -> loped -> doped -> domed -> homed -> holed -> holer -> hover -> hiver -> diver -> dicer -> diced -> diked -> dikes -> dimes -> limes -> lames -> fames -> faces -> faced -> faded -> fader -> faker -> laker -> lacer -> macer -> maser -> miser -> miler -> filer -> fiber -> giber -> gibed -> jibed -> jibes -> jives -> fives -> fines -> finds -> binds -> birds -> bards -> barfs -> barfy -> barky -> balky -> baldy -> baddy -> badly -> madly -> manly -> mangy -> mange -> manse -> masse -> passe -> parse -> purse -> curse -> curve -> carve -> carne -> carny -> canny -> candy -> handy -> hands -> hangs -> gangs -> gongs -> bongs -> bongo -> bingo -> binge -> bilge -> bilgy -> biggy -> boggy -> doggy -> dodgy -> dodge -> bodge -> badge -> barge -> sarge -> serge -> merge -> merse -> verse -> verve -> nerve -> nervy -> nerdy -> needy -> needs -> deeds -> deems -> diems -> diets -> dints -> dings -> dingy -> dinky -> dicky -> dicks -> decks -> becks -> backs -> basks -> basis -> basic -> baric -> boric -> toric -> tonic -> conic -> colic -> folic -> folio -> polio -> polis -> polls -> lolls -> lolly -> dolly -> dally -> daily -> dairy -> fairy -> fairs -> hairs -> heirs -> hears -> heaps -> helps -> kelps -> keeps -> beeps -> beefs -> beefy -> beery -> berry -> burry -> burly -> bully -> fully -> filly -> fills -> cills -> culls -> cults -> colts -> bolts -> bolas -> molas -> molal -> modal -> medal -> metal -> fetal -> fatal -> natal -> naval -> navel -> naves -> haves -> hades -> hides -> hires -> heres -> herbs -> kerbs -> kerfs -> nerfs -> nerts -> nests -> pests -> pasts -> fasts -> farts -> farms -> forms -> corms -> cords -> cordy -> corky -> cocky -> cocks -> cocas -> codas -> sodas -> sofas -> softs -> lofts -> lefts -> hefts -> hafts -> halts -> hilts -> gilts -> gifts -> rifts -> riots -> roots -> foots -> fonts -> wonts -> wonks -> honks -> hones -> honey -> coney -> covey -> coven -> cozen -> dozen -> dozer -> doser -> loser -> lower -> mower -> mowed -> cowed -> coked -> cokes -> comes -> combs -> bombs -> boobs -> booby -> booky -> bosky -> bossy -> lossy -> lousy -> louse -> house -> horse -> gorse -> goose -> goosy -> goody -> goods -> golds -> gelds -> melds -> mends -> menus -> minus -> minas -> micas -> picas -> pitas -> piths -> kiths -> kites -> bites -> biles -> bilks -> bulks -> bunks -> bunko -> bunco -> bunch -> butch -> batch -> hatch -> hitch -> pitch -> pinch -> cinch -> conch -> coach -> poach -> porch -> torch -> touch -> tough -> cough -> couth -> south -> sooth -> booth -> broth -> froth -> frosh -> fresh -> flesh -> flash -> blash -> blast -> beast -> feast -> feist -> feint -> faint -> paint -> point -> joint -> joins -> loins -> loons -> coons -> cools -> coals -> foals -> foils -> roils -> roids -> roads -> roams -> reams -> teams -> teaks -> peaks -> peeks -> leeks -> leers -> seers -> suers -> suets -> stets -> stats -> spats -> spans -> spang -> slang -> clang -> clank -> blank -> black -> alack -> aleck -> fleck -> flick -> flics -> flies -> flees -> fleas -> pleas -> pleat -> bleat -> bleak -> break -> bread -> breed -> bleed -> blend -> blond -> blood -> bloom -> broom -> brook -> crook -> croak -> cloak -> clock -> cluck -> pluck -> plunk -> plink -> prink -> brink -> brick -> trick -> track -> trace -> brace -> bract -> brant -> brand -> braid -> brain