a-a a-b a-i a-q a-t a-z aaa aab aai aaq aar aat aaz ab- aba abb abi abq abr abt abz ai- aia aib aii aiq air ait aiz aqa aqi aqr aqt ar- ara arb ari arq arr art arz at- ata atb ati atr att atz az- aza azb azi azq azt azz baa bab bai baq bar bat baz bba bbb bbi bbq bbr bbt bi- bia bib bii bir bit biz bqt bra brb bri brq brr brt brz bta btb bti btq btr btt btz bza bzr bzz ia- iaa iab iai iaq iar iat iaz iba ibb ibi ibr ibt ibz iia iib iii iir iit iqa iqt ir- ira irb iri irq irr irt ita itb iti itq itt itz iza izi izz qaa qar qat qaz qba qbq qir qit qiz qqq qra qrb qri qrt qta qti qtq qtr qtz ra- raa rab rai raq rar rat raz rba rbb rbi rbr rbt ria rib rii riq rir rit riz rra rrb rri rrq rrr rrt rta rtb rti rtq rtr rtt rtz rza rzb taa tab tai taq tar tat taz tba tbb tbi tbr tbt tbz tia tib tii tir tit tiz tra trb tri trq trr trt trz tta ttb tti ttr ttt tza zaa zab zai zaq zar zat zaz zbb zbr zbt zia zib zir zit ziz zta ztr zzr zzt zzz