a-a a-b a-i a-t aaa aab aai aan aao aar aat aay ab- aba abb abi abn abo abr abt aby ai- aia aib aii ain aio air ait aiy an- ana anb ani ann ano anr ant any aoa aob aoi aon aoo aor aot ar- ara arb ari arn aro arr art ary at- ata atb ati atn ato atr att ay- aya ayi ayn ayo ayr ayt baa bab bai ban bao bar bat bay bba bbb bbi bbn bbo bbr bbt bby bi- bia bib bii bin bio bir bit biy bna bnb bni bnn bno bnr bnt boa bob boi bon boo bor bot boy bra brb bri brn bro brr brt bry bta btb bti btn bto btr btt bty by- bya byi byn byo byr byt ia- iaa iab iai ian iao iar iat iba ibb ibi ibn ibo ibr ibt iby iia iib iii iin iio iir iit in- ina inb ini inn ino inr int iny io- ioa iob ioi ion ioo ior iot ir- ira irb iri irn iro irr irt iry ita itb iti itn ito itt ity iya iyo iyr iyt iyy n-i naa nab nai nan nao nar nat nay nba nbb nbi nbn nbo nbr nbt nia nib nii nin nio nir nit nna nnb nni nnn nno nnt no- noa nob noi non noo nor not noy nra nrb nri nrn nro nrr nrt nry nta ntb nti ntn nto ntr ntt nya nyn nyo nyt nyy o-i oaa oab oai oan oao oar oat ob- oba obb obi obn obo obr obt oby oia oib oii oin oio oir oit on- ona onb oni onn ono onr ont ony oo- ooa oob ooi oon ooo oor oot or- ora orb ori orn oro orr ort ory ot- ota otb oti otn oto otr ott oya oyi oyo ra- raa rab rai ran rao rar rat ray rba rbb rbi rbn rbo rbr rbt ria rib rii rin rio rir rit riy rna rnb rni rnn rno rnr rnt rny roa rob roi ron roo ror rot roy rra rrb rri rrn rrr rrt rta rtb rti rtn rto rtr rtt rty ry- rya ryn ryo ryr ryy taa tab tai tan tao tar tat tay tba tbb tbi tbn tbo tbr tbt tia tib tii tin tio tir tit tiy tna tnb tni tnn tno tnr tnt to- toa tob toi ton too tor tot toy tra trb tri trn tro trr trt try tta ttb tti ttn tto ttr ttt tty tya tyn tyo tyr tyt yaa yab yai yan yao yar yat yay ybi ybr yby yii yin yio yir yit yna ynn yny yob yoi yon yoo yor yot yoy yra yrn yro yrt yta ytn yto ytr ytt yyb yyt yyy