a-a a-b a-c aaa aab aac aae aak aao aax ab- aba abb abc abe abk abo abx ac- aca acb acc ace ack aco acx aea aeb aec aee aek aeo aex aka akb akc ake akk ako aoa aob aoc aoe aok aoo aox ax- axa axe axk axo axx baa bab bac bae bak bao bax bba bbb bbc bbe bbk bbo bbx bca bcb bcc bce bck bco bcx be- bea beb bec bee bek beo bex bka bkb bkc bke bkk bko bkx boa bob boc boe bok boo box bxb bxo bxx c-- caa cab cac cae cak cao cax cba cbb cbc cbe cbk cbo cbx cca ccb ccc cce cck cco ccx ce- cea ceb cec cee cek ceo cex cka ckb ckc cko ckx co- coa cob coc coe cok coo cox cxc cxk cxo cxx eaa eab eac eae eak eao eax eba ebb ebc ebe ebk ebo ebx ec- eca ecb ecc ece eck eco ecx eea eeb eec eee eek eeo eex eka ekb ekc eke eko eo- eoa eob eoc eoe eok eoo ex- exa exc exe exo exx ka- kaa kab kac kae kak kao kax kba kbb kbc kbe kbk kbo kbx kca kcb kcc kce kck kcx ke- kea keb kec kee kek keo kex kkb kkc kke kkk koa kob koc koe kok koo kxo oaa oab oac oae oak oao oax ob- oba obb obc obe obk obo obx oc- oca ocb occ ock oco ocx oea oeb oec oee oeo oex oka okb okc oke okk oko oo- ooa oob ooc ook ooo oox ox- oxa oxb oxc oxo oxx xaa xac xak xbc xbe xbx xcb xcx xee xex xkb xke xoa xoc xok xoo xox xxo xxx

a-ak a-be a-ok aaaa aaab aaac aaae aaba aabb aabc aaca aacb aacc aace aack aaco aaea aaec aaka aake aaoe aaoo abaa abab abac abae abak abax abb- abba abbb abbe abbo abca abcb abcc abec abee aboa abob abok aboo abox acaa acab acac acae acba acca accc acce acco ace- acea acec acek acke acoa acoe aeac aecb aeka akaa akae akao akca akee akka akko akok aoba aoca aoce axce axo- axoa axxo ba-x baaa baak baba babb babe babo bac- baca bacc bace back baco baek bak- baka bake bako bbbb bbeb bbox bcaa bcbc bcca bccc bcec beak beba bebb bebe bebo beca beck beeb beek beka beke beko beo- beok boab boac boak boba bobb bobe bobo boca boce bock boco boea boec boee boeo boka boke boko boob booc booe book boox boxa c-bo caaa caab caac caba cabe cabo cac- caca cacc cace cack caco caec caex caka cake caxa cbac cbax cbbc cbca cbcc cbce cbea cbec cbee cbka cbko cbox cbxa ccaa ccab ccac ccba ccbc ccca cccb cccc ccee ccob ccoc ceac ceba cec- ceca cece ceco ceeb ceec ceke cexe ckac ckbc ckbe ckbx ckck ckco ckcx ckoa ckob ckoc ckoo coak coax coba cobb cobe cobo coca coce cock coco coex cok- coka coke coko coob cook coxa coxe cxxx eaba eaca eacc eaec ebac ebba ebbc ebbo ebcc eboe eboo ebox ecaa ecac ecao ecbc ecbe ecca eccb eccc ecce ecco ecka ecko eco- eeca eeea eeee eeka eeke eeoc eka- ekab ekco ekeb ekek ekka ekoa eoka exa- exco exec exo- kaaa kaab kaak kaba kabb kabc kabe kabo kacb kacc kace kaco kaeo kaka kakc kake kakk kako kakx kaoa kaoc kaok kaox kaxa kaxe kbaa kbab kbac kbae kbak kbba kbbb kbbc kbbe kbbk kbbo kbca kbcb kbce kbck kbco kbeb kbec kbee kbek kbeo kbex kbkb kbkk kbko kboa kbob kboc kboe kbok kboo kbox kbxb kbxx kc-x kcaa kcab kcac kcba kcbc kcbk kcbx kcca kccb kccc kcck kcea kceb kcec kcee kceo kckc kckk kcko kckx kcob kcoe kcox kea- keak keba kebb kebc kebe keca keck keco keek keka kekb kekc keke keko keok kexa kexb kexo kexx kkaa kkac kkba kkbb kkbe kkbo kkcb kkck kkco kkea kkex kkkk kkoa kkob kkoo kkxa kkxk kkxx koab koac koae koak koba kobb kobc kobe kobk kobo koca kocb kock koea koka kokb kokc koke kokk koko kokx koob kooc kook kooo koxc koxe kxaa kxac kxba kxbx kxca kxea kxeo kxex kxkc kxkk kxkx kxoa kxok kxoo kxox kxxe kxxk kxxo kxxx o-eo oake obak obba obbo obea obec obex obkb oboe obok obox ocab ocac ocak ocbc occa occc oce ocee ocke oeax oec- oeca oecc oeec okak okka okko okok ooaa ooak ooba oobe oooo oxa- oxea oxo- oxox oxxo xace xbee xbox xeka xeko xexe xobc xoca xoco xoka xoxo xxxo xxxx

-aaa- a-box aaace aaaee aaaoc aabaa aabba aacbc aakko abaab ababa ababe abaca aback abaco abaka abake abako abbac abccc abeba abebe abece abkoo aboab abobo aboke abook acaca acacb acack acake aceae acebo ackee acock acoke acook aeaea aebbe aka-e akaba akabo akaoa akce akobo akoka akoko baabe baake babak babax babec babee babek babka baboo bacab bacao bacax bacca bacco bacea back- backa backe bakea bakka bakke bakoa bbbee bbook bcock beack beaco bebek bebox becak becca becco becke beeac beebe beeke bekaa bekka bekke bekko bekok bo-bo boaco bobac bobak bobea bobek bobko boboc bobok bocac bocao bocca bocce bocka bocke bocoa boece boeck boeke bokaa bokeo bokko bokok booba booce boock booco booke booko boxbe boxee c-a-c ca-ca caaba cabob caboc cabok cacak cacao caco- cacoa caec- caeca caoba caxee ccccc ceace cebec cecka ceco- ceeac ceoce co-bo co-co cobbe cocao cocc- cocce cocco cocea coceo cocka cocke cockx cocoa cokak cokk- cooba cooee cooke coxae e-box ebeko ebook eecca eecke eeeee ekeko execx k-a-o k-box kaaba kabaa kabab kabak kabba kabob kacee kakae kakao kakka kakke kakko kako- kaooa kebab kebbe kebek kebob kecak kekec kexec kkbox ko-ko kobee kocab kocak kocek kocke kokab kokak kokka kokko kooba kooka obaba obake obock ocoee oeco- okabe okaka okeke okobo okoc ooooo