a-a a-b a-c aaa aab aac aae aaf aah aao ab- aba abb abc abe abf abh abo ac- aca acb acc ace acf ach aco aea aeb aec aee aef aeh aeo af- afa afb afc afe aff afh afo aha ahb ahc ahe ahf ahh aho aoa aob aoc aoe aof aoh aoo baa bab bac bae baf bah bao bba bbb bbc bbe bbf bbh bbo bca bcb bcc bce bcf bch bco be- bea beb bec bee bef beh beo bfa bfb bfc bfe bff bfh bfo bha bhb bhc bhe bhf bhh bho boa bob boc boe bof boh boo c-- caa cab cac cae caf cah cao cba cbb cbc cbe cbf cbh cbo cca ccb ccc cce ccf cch cco ce- cea ceb cec cee cef ceh ceo cfa cfb cfc cfe cff cfh cfo ch- cha chb chc che chf chh cho co- coa cob coc coe cof coh coo eaa eab eac eae eaf eah eao eba ebb ebc ebe ebf ebh ebo ec- eca ecb ecc ece ecf ech eco eea eeb eec eee eef eeo ef- efa efb efc efe eff efh efo eha ehb ehc ehe ehf ehh eho eo- eoa eob eoc eoe eof eoh eoo faa fab fac fae faf fah fao fba fbb fbc fbe fbf fbh fbo fca fcb fcc fce fcf fco fea feb fec fee fef feh feo ffa ffc ffe fff ffh ffo fha fhb fhc fhe fhf fhh fho foa fob foc foe fof foh foo haa hab hac hae haf hah hao hba hbb hbc hbe hbf hbh hbo hca hcb hcc hce hcf hch hco he- hea heb hec hee hef heh heo hfa hfb hfc hfe hff hfh hfo hha hhb hhc hhe hhf hhh hho hoa hob hoc hoe hof hoh hoo oaa oab oac oae oaf oah oao ob- oba obb obc obe obf obh obo oc- oca ocb occ ocf och oco oea oeb oec oee oef oeh oeo of- ofa ofb ofc ofe off ofo oha ohc ohe ohf ohh oho oo- ooa oob ooc oof ooh ooo

a-be a-ha aaaa aaab aaac aaae aaaf aaah aaba aabb aabc aabh aaca aacb aacc aace aacf aach aaco aaea aaec aafa aafb aafc aaff aaha aaoe aaoo abaa abab abac abae abaf abb- abba abbb abbe abbo abca abcb abcc abcf abch abec abee abff abha abho aboa abob abof aboh aboo acaa acab acac acae acba acca accc acce accf acch acco ace- acea acec aceh acfc acfe acha ache achh acho acoa acoe acoh aeac aeaf aecb afaa afao afca afcb afcc afch afee affa affc affo afoa afoe afoo ahab ahac ahah ahfa ahha ahoa ahoe aoah aoba aoca aoce baaa baaf baah baba babb babe babo bac- baca bacc bace bach baco bafc baff bafo baha baho baoh bbbb bbch bbeb bbfc bcaa bcbc bcca bccc bcec bcfc bche bcof beaf beah beba bebb bebe bebo beca bech beeb beef befa befe beff befo beo- beof bfca bhao bhca bhcc bhff boab boac boba bobb bobe bobo boca boce boch boco boea boec boee boef boeo bofa bofe boff bofh boha boho boob booc booe boof booh c-bo caaa caab caac caaf caah caba cabe cabf cabo cac- caca cacc cace cach caco caec cafa cafb cafc cafe caff caha cahe cbac cbbc cbca cbcc cbce cbea cbec cbee cbef cbfb cbfc cbha ccaa ccab ccac ccaf ccba ccbc ccca cccb cccc cccf ccee ccfa ccfc ccff ccha cche ccob ccoc ceac ceba cec- ceca cece ceco ceeb ceec cef- cefa cefc cfaa cfab cfac cfae cfao cfbc cfca cfcb cfcf cfco cffb cfoa chaa chab chac chae chaf chah chao chca chce chch chea cheb chec chee chef cheh chfa chfc chha choc choh choo coba cobb cobe cobh cobo coca coce coch coco cofc cofe coff coha coho coob coof cooh eaaf eaba eabh eaca eacc each eaec eafb ebac ebba ebbc ebbo ebcc ebfc eboe eboo ecaa ecac ecao ecbc ecbe ecca eccb eccc ecce ecco ecef ecfa ecfc echa eche echo eco- eeca eeea eeee eefa eefe eeoc efab efca efco efeo effa ehaa ehcc ehea eheh faaa faac faah faba fabe fabo faca facc face fach faeb fafa fafc fafe faff fafo faha fcab fcba fcca fccf fcch feaf feba febo fece fech feeb fefc fefe feff fefo feof feoh ffcc ffee ffff foaf foba foca foce foch foco fofo foof haab haaf haba habe habo hace haco haec hafb hafe haff haha haho hbfc hboc hcbc hcca hccb hccc hcch hcfa hcfc heaf heah hebb hebe hebo heca hech heeb heef hefe hehe heho hfba hfce hhaa hhhh hhof hoac hoba hobe hobo hoca hoce hoch hofe hoff hoha hohe hoho hooe hoof o-eo oafc oafo oahe obba obbo obea obec oboe ocab ocac ocbc occa occc oce ocee ocef ocfa ocha oche oec- oeca oecc oeec ofah off- offa offc offe offh offo ohba ohbe ohcc ohee ohho ohob ohoh ooaa ooba oobe ooff ooha ooho oooh oooo

-aaa- aaaah aaace aaaee aaaoc aabaa aabba aacbc aacfo aaeaf aahaa abaab ababa ababe abaca abaco abbac abccc abcho abeba abebe abece abfab aboab abobo aboha acaca acacb accho aceae acebo aceof achab achao achee achef achoo aeaea aebbe aface afcea afcec afefe ahafo ahhaa ahhha ahoah baabe babec babee baboo bacab bacao bacca bacco bacea bacha bache baffa bahce bahco baobh bbbee beach beaco beafe becca becco beche becho beeac beebe beech beffe befoe behea behof beofe beoff bface bo-bo bo-ho boaco bobac bobea boboc bocac bocao bocca bocce bocha boche bocho bocoa boece boffa boffo bohae bohea booba booce booch booco c-a-c ca-ca caaba cabob caboc cacao cacha cache caco- cacoa caec- caeca caffa caffe caffo cahch caoba caohe cbeff ccccc ceace cebec cech ceche ceco- ceeac cehao ceoce cfhof chaab chaac chaah chaba chaca chace chach chaco chafa chafe chaff chahe chea- checa chech chefa chefe cheff cheha cheho cheo chhab choba