a-a a-b a-z aaa aab aae aag aan aao aau aaz ab- aba abb abe abg abn abo abu abz aea aeb aee aeg aen aeo aeu aez ag- aga agb age agg agn ago agu agz an- ana anb ane ang ann ano anu anz aoa aob aoe aog aon aoo aou au- aua aub aue aug aun auo auz az- aza azb aze azg azn azo azu azz b-u baa bab bae bag ban bao bau baz bba bbb bbe bbg bbn bbo bbu be- bea beb bee beg ben beo beu bez bga bgb bge bgg bgn bgo bgu bgz bna bnb bne bng bnn bno bnu bnz boa bob boe bog bon boo bou boz bua bub bue bug bun buo buu buz bza bze bzn bzo bzu bzz eaa eab eae eag ean eao eau eaz eba ebb ebe ebg ebn ebo ebu eea eeb eee eeg een eeo ega egb ege egg egn ego egu en- ena enb ene eng enn eno enu enz eo- eoa eob eoe eog eon eoo eou eu- eua eub eue eug eun eze ezo ezz gaa gab gae gag gan gao gau gaz gba gbe gbg gbn gbo gbu gbz ge- gea geb gee geg gen geo geu gez gga ggb ggg ggn ggo ggu ggz gna gnb gne gnn gno gnu goa gob goe gog gon goo gou goz gu- gua gub gue gug gun guo guu guz gza gzo gzu naa nab nae nag nan nao nau naz nba nbb nbe nbg nbn nbo nbu ne- nea neb nee neg nen neo neu nez nga ngb nge ngg ngn ngo ngu nna nnb nne nng nnn nno nnu nnz no- noa nob noe nog non noo nou noz nua nub nue nug nun nuo nuu nzb nze nzg nzo nzz oaa oab oae oag oan oao oau ob- oba obb obe obg obn obo obu oea oeb oee oeg oen oeo oga oge ogg ogn ogo on- ona onb one ong onn ono onu oo- ooa oob oog oon ooo ou- oua oue oun ouo oza oze ozo ozu ozz ua- uaa uab uae uag uan uao uau uaz uba ubb ube ubg ubn ubo ubu uea ueb uee ueg uen uga ugb uge ugg ugn ugo ugu un- una unb une ung unn uno unu uoa uob uoe uog uon uoo uua uue uug uun uuu uza uzb uzo uzu z-g zaa zab zag zan zao zaz zbb zea zeb zee zen zeo zez zgb zgg zne znn zno zo- zoa zob zoe zog zon zoo zou zub zug zun zuz zzz