a-a a-b a-c aaa aab aac aag aah aak aar aau aay ab- aba abb abc abg abh abk abr abu aby ac- aca acb acc acg ach ack acr acu acy ag- aga agb agc agg agh agk agr agu agy aha ahb ahc ahg ahh ahk ahr ahu ahy aka akb akc akg akh akk akr aku ar- ara arb arc arg arh ark arr aru ary au- aua aub auc aug auh auk aur ay- aya ayc ayh ayk ayr ayu b-u baa bab bac bag bah bak bar bau bay bba bbb bbc bbg bbh bbk bbr bbu bby bca bcb bcc bcg bch bck bcr bcu bcy bga bgb bgc bgg bgh bgk bgr bgu bha bhb bhc bhg bhh bhk bhr bhu bka bkb bkc bkg bkk bkr bra brb brg brh brk brr bru bry bua bub buc bug buh buk bur buu buy by- bya byc byg byh byk byr byu c-- caa cab cac cag cah cak car cau cay cba cbb cbc cbg cbh cbk cbr cbu cby cca ccb ccc ccg cch cck ccr ccu cga cgb cgc cgg cgh cgr cgu cgy ch- cha chb chc chg chh chk chr chu chy cka ckb ckc ckh cky cra crb crc crg crh crk crr cru cry cua cub cuc cug cuh cuk cur cuu cuy cya cyb cyc cyg cyk cyr gaa gab gac gag gah gak gar gau gay gba gbc gbg gbh gbk gbr gbu gby gca gcb gcc gcg gch gck gcr gcu gga ggb ggc ggg ggh ggr ggu gha ghb ghc ghg ghh ghr gka gkb gkh gra grb grc grg grh grk grr gru gry gu- gua gub guc gug guk gur guu guy gy- gya gyb gyr haa hab hac hag hah hak har hau hay hba hbb hbc hbg hbh hbk hbr hbu hby hca hcb hcc hcg hch hck hcr hcy hga hgb hgc hgg hgh hgk hgr hgu hgy hha hhb hhc hhg hhh hhk hhr hhu hhy hka hkb hkg hkh hkk hkr hku hr- hra hrb hrc hrg hrh hrk hrr hru hua hub huc hug huh huk hur huu huy hy- hya hyb hyc hyg hyh hyr hyy ka- kaa kab kac kag kah kak kar kau kay kba kbb kbc kbh kbk kbr kbu kca kcb kcc kcg kch kck kcr kcu kga kgb kgc kgh kgu kgy kha khh khk khr khu kkb kkc kkh kkk kkr kku kky kra krc krg krk krr kru kry kub kuc kug kuh kuk kur kuu kuy kya kyc kyr kyu ra- raa rab rac rag rah rak rar rau ray rba rbb rbc rbg rbh rbk rbr rbu rca rcb rcc rcg rch rcr rcu rga rgb rgc rgg rgh rgk rgr rh- rha rhb rhc rhg rhh rhr rhu rkb rkc rkg rkk rku rky rra rrb rrc rrg rrh rrk rrr rru rua rub ruc rug ruh ruk rur ruu ruy ry- rya ryc ryg ryk ryr ryu ryy ua- uaa uab uac uag uah uak uar uau uay uba ubb ubc ubg ubh ubk ubr ubu uby uca ucb ucc ucg uch uck ucr ucu uga ugb ugc ugg ugh ugk ugr ugu uha uhb uhc uhh uhr uhu uhy uka ukb ukc ukk ukr uku ur- ura urb urc urg urk urr uru ury uua uuc uug uur uuu uyc uyu yaa yab yac yag yah yak yar yau yay ybc ybg ybr yby yca ycc ych ycu ycy yga ygc yha yhc yhu yka ykk yra yrc yrg yru yua yug yuh yuk yur yuu yuy yyb yyc yyg yyu yyy