a-a a-b a-i a-t aaa aab aai aan aao aat aay ab- aba abb abi abn abo abt aby ai- aia aib aii ain aio ait aiy an- ana anb ani ann ano ant any aoa aob aoi aon aoo aot at- ata atb ati atn ato att ay- aya ayi ayn ayo ayt baa bab bai ban bao bat bay bba bbb bbi bbn bbo bbt bby bi- bia bib bii bin bio bit biy bna bnb bni bnn bno bnt boa bob boi bon boo bot boy bta btb bti btn bto btt bty by- bya byi byn byo byt ia- iaa iab iai ian iao iat iba ibb ibi ibn ibo ibt iby iia iib iii iin iio iit in- ina inb ini inn ino int iny io- ioa iob ioi ion ioo iot ita itb iti itn ito itt ity iya iyo iyt iyy n-i naa nab nai nan nao nat nay nba nbb nbi nbn nbo nbt nia nib nii nin nio nit nna nnb nni nnn nno nnt no- noa nob noi non noo not noy nta ntb nti ntn nto ntt nya nyn nyo nyt nyy o-i oaa oab oai oan oao oat ob- oba obb obi obn obo obt oby oia oib oii oin oio oit on- ona onb oni onn ono ont ony oo- ooa oob ooi oon ooo oot ot- ota otb oti otn oto ott oya oyi oyo taa tab tai tan tao tat tay tba tbb tbi tbn tbo tbt tia tib tii tin tio tit tiy tna tnb tni tnn tno tnt to- toa tob toi ton too tot toy tta ttb tti ttn tto ttt tty tya tyn tyo tyt yaa yab yai yan yao yat yay ybi yby yii yin yio yit yna ynn yny yob yoi yon yoo yot yoy yta ytn yto ytt yyb yyt yyy