a-a a-b a-i a-t aaa aab aai aan aao aas aat aay ab- aba abb abi abn abo abs abt aby ai- aia aib aii ain aio ais ait aiy an- ana anb ani ann ano ans ant any aoa aob aoi aon aoo aos aot as- asa asb asi asn aso ass ast asy at- ata atb ati atn ato ats att ay- aya ayi ayn ayo ays ayt baa bab bai ban bao bas bat bay bba bbb bbi bbn bbo bbs bbt bby bi- bia bib bii bin bio bis bit biy bna bnb bni bnn bno bns bnt boa bob boi bon boo bos bot boy bsa bsb bsi bsn bso bss bst bsy bta btb bti btn bto bts btt bty by- bya byi byn byo bys byt ia- iaa iab iai ian iao ias iat iba ibb ibi ibn ibo ibs ibt iby iia iib iii iin iio iis iit in- ina inb ini inn ino ins int iny io- ioa iob ioi ion ioo ios iot is- isa isb isi isn iso iss ist isy ita itb iti itn ito its itt ity iya iyo iys iyt iyy n-i naa nab nai nan nao nas nat nay nba nbb nbi nbn nbo nbs nbt nia nib nii nin nio nis nit nna nnb nni nnn nno nns nnt no- noa nob noi non noo nos not noy nsa nsb nsi nsn nso nss nst nsy nta ntb nti ntn nto nts ntt nya nyn nyo nys nyt nyy o-i oaa oab oai oan oao oas oat ob- oba obb obi obn obo obs obt oby oia oib oii oin oio ois oit on- ona onb oni onn ono ons ont ony oo- ooa oob ooi oon ooo oos oot os- osa osb osi osn oso oss ost ot- ota otb oti otn oto ots ott oya oyi oyo oys saa sab sai san sao sas sat say sba sbb sbi sbn sbo sbs sbt sby sia sib sii sin sio sis sit sna snb sni snn sno sns snt sny soa sob soi son soo sos sot soy ss- ssa ssb ssi ssn sso sss sst sta stb sti stn sto sts stt sty sy- sya syb syi syn sys syt taa tab tai tan tao tas tat tay tba tbb tbi tbn tbo tbs tbt tia tib tii tin tio tis tit tiy tna tnb tni tnn tno tns tnt to- toa tob toi ton too tos tot toy tsa tsb tsi tsn tso tss tst tsy tta ttb tti ttn tto tts ttt tty tya tyn tyo tys tyt yaa yab yai yan yao yas yat yay ybi ybs yby yii yin yio yis yit yna ynn yns yny yob yoi yon yoo yos yot yoy ysa ysb ysi yso yss yst ysy yta ytn yto yts ytt yyb yys yyt yyy