-ic a-a a-b a-c a-i a-t aaa aab aac aai aan aao aat aay ab- aba abb abc abi abn abo abt aby ac- aca acb acc aci acn aco act acy ai- aia aib aic aii ain aio ait aiy an- ana anb anc ani ann ano ant any aoa aob aoc aoi aon aoo aot at- ata atb atc ati atn ato att ay- aya ayc ayi ayn ayo ayt baa bab bac bai ban bao bat bay bba bbb bbc bbi bbn bbo bbt bby bca bcb bcc bci bcn bco bct bcy bi- bia bib bic bii bin bio bit biy bna bnb bnc bni bnn bno bnt boa bob boc boi bon boo bot boy bta btb btc bti btn bto btt bty by- bya byc byi byn byo byt c-- caa cab cac cai can cao cat cay cba cbb cbc cbi cbn cbo cbt cby cca ccb ccc cci ccn cco cct ci- cia cib cic cii cin cio cit cn- cna cnb cnc cni cnn cno cnt cny co- coa cob coc coi con coo cot coy cta ctb ctc cti ctn cto ctt cty cya cyb cyc cyn cyo cyt ia- iaa iab iac iai ian iao iat iba ibb ibc ibi ibn ibo ibt iby ica icb icc ici icn ico ict icy iia iib iic iii iin iio iit in- ina inb inc ini inn ino int iny io- ioa iob ioc ioi ion ioo iot ita itb itc iti itn ito itt ity iya iyc iyo iyt iyy n-i naa nab nac nai nan nao nat nay nba nbb nbc nbi nbn nbo nbt nca ncb ncc nci ncn nco nct nia nib nic nii nin nio nit nna nnb nnc nni nnn nno nnt no- noa nob noc noi non noo not noy nta ntb ntc nti ntn nto ntt nya nyc nyn nyo nyt nyy o-i oaa oab oac oai oan oao oat ob- oba obb obc obi obn obo obt oby oc- oca ocb occ oci ocn oco oct oia oib oic oii oin oio oit on- ona onb onc oni onn ono ont ony oo- ooa oob ooc ooi oon ooo oot ot- ota otb otc oti otn oto ott oya oyi oyo taa tab tac tai tan tao tat tay tba tbb tbc tbi tbn tbo tbt tca tcb tcc tci tcn tco tct tia tib tic tii tin tio tit tiy tna tnb tnc tni tnn tno tnt to- toa tob toc toi ton too tot toy tta ttb ttc tti ttn tto ttt tty tya tyc tyn tyo tyt yaa yab yac yai yan yao yat yay ybc ybi yby yca ycc yci yco ycy yii yin yio yit yna ynn yny yob yoc yoi yon yoo yot yoy yta ytc ytn yto ytt yyb yyc yyt yyy