a-a a-b a-i a-t aaa aab aai aao aar aat aau aay ab- aba abb abi abo abr abt abu aby ai- aia aib aii aio air ait aiu aiy aoa aob aoi aoo aor aot aou ar- ara arb ari aro arr art aru ary at- ata atb ati ato atr att atu au- aua aub aui auo aur aut ay- aya ayi ayo ayr ayt ayu b-u baa bab bai bao bar bat bau bay bba bbb bbi bbo bbr bbt bbu bby bi- bia bib bii bio bir bit biu biy boa bob boi boo bor bot bou boy bra brb bri bro brr brt bru bry bta btb bti bto btr btt btu bty bua bub bui buo bur but buu buy by- bya byi byo byr byt byu ia- iaa iab iai iao iar iat iau iba ibb ibi ibo ibr ibt ibu iby iia iib iii iio iir iit iiu io- ioa iob ioi ioo ior iot iou ir- ira irb iri iro irr irt iru iry ita itb iti ito itt itu ity iu- iua iub iui iur iut iya iyo iyr iyt iyy o-i oaa oab oai oao oar oat oau ob- oba obb obi obo obr obt obu oby oia oib oii oio oir oit oiu oo- ooa oob ooi ooo oor oot or- ora orb ori oro orr ort oru ory ot- ota otb oti oto otr ott otu ou- oua oui ouo our out oya oyi oyo ra- raa rab rai rao rar rat rau ray rba rbb rbi rbo rbr rbt rbu ria rib rii rio rir rit riy roa rob roi roo ror rot rou roy rra rrb rri rrr rrt rru rta rtb rti rto rtr rtt rtu rty rua rub rui ruo rur rut ruu ruy ry- rya ryo ryr ryu ryy taa tab tai tao tar tat tau tay tba tbb tbi tbo tbr tbt tbu tia tib tii tio tir tit tiu tiy to- toa tob toi too tor tot tou toy tra trb tri tro trr trt tru try tta ttb tti tto ttr ttt ttu tty tua tub tui tuo tur tut tuu tuy tya tyo tyr tyt ua- uaa uab uai uao uar uat uau uay uba ubb ubi ubo ubr ubt ubu uby uia uib uii uio uir uit uiu uoa uob uoo uor uot ur- ura urb uri uro urr urt uru ury uta utb uti uto utr utt utu uty uua uur uut uuu uyi uyo uyu yaa yab yai yao yar yat yau yay ybi ybr yby yii yio yir yit yob yoi yoo yor yot you yoy yra yro yrt yru yta yto ytr ytt ytu yua yui yuo yur yut yuu yuy yyb yyt yyu yyy