a-a a-b a-c a-z aaa aab aac aad aah aan aar aau aaz ab- aba abb abc abd abh abn abr abu abz ac- aca acb acc acd ach acn acr acu acz ad- ada adb adc add adh adn adr adu adz aha ahb ahc ahd ahh ahn ahr ahu ahz an- ana anb anc and anh ann anr anu anz ar- ara arb arc ard arh arn arr aru arz au- aua aub auc aud auh aun aur auz az- aza azb azd azn azu azz b-u baa bab bac bad bah ban bar bau baz bba bbb bbc bbd bbh bbn bbr bbu bca bcb bcc bcd bch bcn bcr bcu bcz bda bdb bdc bdd bdh bdr bdu bdz bha bhb bhc bhd bhh bhr bhu bna bnb bnc bnd bnn bnr bnu bnz bra brb brd brh brn brr bru brz bua bub buc bud buh bun bur buu buz bza bzd bzh bzn bzr bzu bzz c-- caa cab cac cad cah can car cau caz cba cbb cbc cbd cbh cbn cbr cbu cbz cca ccb ccc ccd cch ccn ccr ccu ccz cda cdb cdc cdd cdh cdn cdr cdu cdz ch- cha chb chc chd chh chn chr chu chz cn- cna cnb cnc cnd cnh cnn cnr cnu cra crb crc crd crh crn crr cru crz cua cub cuc cud cuh cun cur cuu cuz cz- czc czd daa dab dac dad dah dan dar dau daz dba dbb dbc dbd dbh dbn dbr dbu dbz dca dcb dcc dcd dcn dcr dcu dda ddb ddc ddd ddh ddn ddr ddu ddz dh- dha dhb dhc dhd dhh dhr dhu dna dnb dnc dnd dnh dnn dnr dnz dra drb drc drd drn drr dru drz dua dub duc dud duh dun dur duz dza dzb dzd dzr dzu haa hab hac had hah han har hau haz hba hbb hbc hbd hbh hbn hbr hbu hbz hca hcb hcc hcd hch hcn hcr hda hdb hdc hdd hdh hdn hdr hdu hdz hha hhb hhc hhd hhh hhn hhr hhu hhz hna hnb hnc hnd hnh hnn hnu hnz hr- hra hrb hrc hrd hrh hrn hrr hru hrz hua hub huc hud huh hun hur huu huz hzd naa nab nac nad nah nan nar nau naz nba nbb nbc nbd nbn nbr nbu nca ncb ncc ncd nch ncn ncr ncu nda ndb ndc ndd ndh ndn ndr ndu nha nhb nhc nhd nhh nhn nhr nhu nhz nna nnb nnc nnh nnn nnu nnz nra nrb nrc nrd nrn nrr nru nrz nua nub nuc nud nuh nun nur nuu nzb nzd nzz ra- raa rab rac rad rah ran rar rau raz rba rbb rbc rbd rbh rbn rbr rbu rca rcb rcc rcd rch rcn rcr rcu rda rdb rdc rdd rdh rdn rdr rdu rh- rha rhb rhc rhd rhh rhn rhr rhu rna rnb rnc rnd rnh rnn rnr rnu rnz rra rrb rrc rrd rrh rrn rrr rru rua rub ruc rud ruh run rur ruu ruz rza rzb ua- uaa uab uac uad uah uan uar uau uaz uba ubb ubc ubh ubn ubr ubu uca ucb ucc ucd uch ucn ucr ucu uda udb udc udd udn udr udu uha uhb uhc uhd uhh uhr uhu un- una unb unc und unh unn unr unu ur- ura urb urc urd urn urr uru urz uua uuc uun uur uuu uza uzb uzh uzu zaa zab zac zad zah zan zar zaz zbb zbc zbr zha zhc zhr zhu znc znd znn zrh zub zuc zud zun zur zuz zzr zzz