a-a a-b a-c aaa aab aac aak aam aan aao aar aay ab- aba abb abc abk abm abn abo abr aby ac- aca acb acc ack acm acn aco acr acy aka akb akc akk akm akn ako akr ama amb amc amk amm amn amo amr amy an- ana anb anc ank anm ann ano anr any aoa aob aoc aok aom aon aoo aor ar- ara arb arc ark arm arn aro arr ary ay- aya ayc ayk ayn ayo ayr baa bab bac bak bam ban bao bar bay bba bbb bbc bbk bbm bbn bbo bbr bby bca bcb bcc bck bcm bcn bco bcr bcy bka bkb bkc bkk bkm bkn bko bkr bma bmb bmc bmk bmm bmn bmo bmr bna bnb bnc bnk bnn bno bnr boa bob boc bok bom bon boo bor boy bra brb brk brm brn bro brr bry by- bya byc byk bym byn byo byr c-- caa cab cac cak cam can cao car cay cba cbb cbc cbk cbm cbn cbo cbr cby cca ccb ccc cck ccm ccn cco ccr cka ckb ckc ckm cko cky cma cmb cmc cmk cmm cmn cmo cmr cmy cn- cna cnb cnc cnm cnn cno cnr cny co- coa cob coc cok com con coo cor coy cra crb crc crk crm crn cro crr cry cya cyb cyc cyk cym cyn cyo cyr ka- kaa kab kac kak kam kan kao kar kay kba kbb kbc kbk kbm kbn kbo kbr kca kcb kcc kck kcm kcn kcr kkb kkc kkk kkm kkn kkr kky kma kmb kmc kmk kmm kmo kn- kna knc knk knm knn kno knr koa kob koc kok kom kon koo kor koy kra krc krk krn kro krr kry kya kyc kym kyn kyo kyr m-o m-r maa mab mac mak mam man mao mar may mba mbb mbc mbk mbm mbo mbr mc- mca mcb mcc mck mcm mcn mco mcr mka mkb mkc mkk mkm mkn mko mkr mky mma mmb mmc mmk mmm mmn mmo mmr mna mnb mnc mnk mnm mnn mno mnr moa mob moc mok mom mon moo mor moy mra mrb mrc mrk mrm mrn mro mrr mry my- mya myb myc myk mym myn myo myr naa nab nac nak nam nan nao nar nay nba nbb nbc nbk nbm nbn nbo nbr nca ncb ncc nck ncm ncn nco ncr nka nkc nkk nkm nkn nko nkr nky nma nmb nmc nmk nmm nmn nmo nmr nna nnb nnc nnk nnm nnn nno no- noa nob noc nok nom non noo nor noy nra nrb nrc nrk nrm nrn nro nrr nry nya nyc nyk nym nyn nyo nyy oaa oab oac oak oam oan oao oar ob- oba obb obc obk obm obn obo obr oby oc- oca ocb occ ock ocm ocn oco ocr oka okb okc okk oko okr om- oma omb omc omm omn omo omr omy on- ona onb onc onk onn ono onr ony oo- ooa oob ooc ook oom oon ooo oor or- ora orb orc ork orm orn oro orr ory oya oyo ra- raa rab rac rak ram ran rao rar ray rba rbb rbc rbk rbm rbn rbo rbr rca rcb rcc rcm rcn rco rcr rkb rkc rkk rkm rko rky rma rmb rmc rmm rmn rmo rmr rna rnb rnc rnm rnn rno rnr rny roa rob roc rok rom ron roo ror roy rra rrb rrc rrk rrm rrn rrr ry- rya ryc ryk rym ryn ryo ryr ryy yaa yab yac yak yam yan yao yar yay ybc ybm ybr yby yca ycc yco ycy yka ykk ykm ykn yma ymc ymm ymo yna ynk ynn yny yob yoc yok yom yon yoo yor yoy yra yrc yrn yro yyb yyc yyy