a-a a-b a-c aaa aab aac aah aan aar aau aay ab- aba abb abc abh abn abr abu aby ac- aca acb acc ach acn acr acu acy aha ahb ahc ahh ahn ahr ahu ahy an- ana anb anc anh ann anr anu any ar- ara arb arc arh arn arr aru ary au- aua aub auc auh aun aur ay- aya ayc ayh ayn ayr ayu b-u baa bab bac bah ban bar bau bay bba bbb bbc bbh bbn bbr bbu bby bca bcb bcc bch bcn bcr bcu bcy bha bhb bhc bhh bhr bhu bna bnb bnc bnn bnr bnu bra brb brh brn brr bru bry bua bub buc buh bun bur buu buy by- bya byc byh byn byr byu c-- caa cab cac cah can car cau cay cba cbb cbc cbh cbn cbr cbu cby cca ccb ccc cch ccn ccr ccu ch- cha chb chc chh chn chr chu chy cn- cna cnb cnc cnh cnn cnr cnu cny cra crb crc crh crn crr cru cry cua cub cuc cuh cun cur cuu cuy cya cyb cyc cyn cyr haa hab hac hah han har hau hay hba hbb hbc hbh hbn hbr hbu hby hca hcb hcc hch hcn hcr hcy hha hhb hhc hhh hhn hhr hhu hhy hna hnb hnc hnh hnn hnu hny hr- hra hrb hrc hrh hrn hrr hru hua hub huc huh hun hur huu huy hy- hya hyb hyc hyh hyn hyr hyy naa nab nac nah nan nar nau nay nba nbb nbc nbn nbr nbu nca ncb ncc nch ncn ncr ncu nha nhb nhc nhh nhn nhr nhu nhy nna nnb nnc nnh nnn nnu nra nrb nrc nrn nrr nru nry nua nub nuc nuh nun nur nuu nuy nya nyc nyn nyu nyy ra- raa rab rac rah ran rar rau ray rba rbb rbc rbh rbn rbr rbu rca rcb rcc rch rcn rcr rcu rh- rha rhb rhc rhh rhn rhr rhu rna rnb rnc rnh rnn rnr rnu rny rra rrb rrc rrh rrn rrr rru rua rub ruc ruh run rur ruu ruy ry- rya ryc ryn ryr ryu ryy ua- uaa uab uac uah uan uar uau uay uba ubb ubc ubh ubn ubr ubu uby uca ucb ucc uch ucn ucr ucu uha uhb uhc uhh uhr uhu uhy un- una unb unc unh unn unr unu uny ur- ura urb urc urn urr uru ury uua uuc uun uur uuu uyc uyu yaa yab yac yah yan yar yau yay ybc ybr yby yca ycc ych ycu ycy yha yhc yhu yna ynn ynu yny yra yrc yrn yru yua yuh yun yur yuu yuy yyb yyc yyu yyy