a-a a-b a-i a-t aaa aab aag aai aao aat aau aay ab- aba abb abg abi abo abt abu aby ag- aga agb agg agi ago agt agu agy ai- aia aib aig aii aio ait aiu aiy aoa aob aog aoi aoo aot aou at- ata atb atg ati ato att atu au- aua aub aug aui auo aut ay- aya ayi ayo ayt ayu b-u baa bab bag bai bao bat bau bay bba bbb bbg bbi bbo bbt bbu bby bga bgb bgg bgi bgo bgt bgu bi- bia bib big bii bio bit biu biy boa bob bog boi boo bot bou boy bta btb btg bti bto btt btu bty bua bub bug bui buo but buu buy by- bya byg byi byo byt byu gaa gab gag gai gao gat gau gay gba gbg gbi gbo gbt gbu gby gga ggb ggg ggi ggo ggt ggu gia gib gig gii gio git giu giy goa gob gog goi goo got gou goy gta gtb gtg gti gto gtt gtu gty gu- gua gub gug gui guo gut guu guy gy- gya gyb gyo ia- iaa iab iag iai iao iat iau iba ibb ibg ibi ibo ibt ibu iby iga igb igg igi igo igt igu igy iia iib iii iio iit iiu io- ioa iob iog ioi ioo iot iou ita itb itg iti ito itt itu ity iu- iua iub iug iui iut iya iyo iyt iyy o-i oaa oab oag oai oao oat oau ob- oba obb obg obi obo obt obu oby oga ogg ogi ogo ogt ogy oia oib oii oio oit oiu oo- ooa oob oog ooi ooo oot ot- ota otb otg oti oto ott otu ou- oua oui ouo out oya oyi oyo taa tab tag tai tao tat tau tay tba tbb tbg tbi tbo tbt tbu tga tgb tgg tgi tgo tgt tgu tgy tia tib tig tii tio tit tiu tiy to- toa tob tog toi too tot tou toy tta ttb ttg tti tto ttt ttu tty tua tub tug tui tuo tut tuu tuy tya tyg tyo tyt ua- uaa uab uag uai uao uat uau uay uba ubb ubg ubi ubo ubt ubu uby uga ugb ugg ugi ugo ugt ugu uia uib uig uii uio uit uiu uoa uob uog uoo uot uta utb uti uto utt utu uty uua uug uut uuu uyi uyo uyu yaa yab yag yai yao yat yau yay ybg ybi yby yga ygo yig yii yio yit yob yog yoi yoo yot you yoy yta yto ytt ytu yua yug yui yuo yut yuu yuy yyb yyg yyt yyu yyy