-ic a-a a-b a-c a-i aaa aab aac aag aai aan aay ab- aba abb abc abg abi abn aby ac- aca acb acc acg aci acn acy ag- aga agb agc agg agi agn agy ai- aia aib aic aig aii ain aiy an- ana anb anc ang ani ann any ay- aya ayc ayi ayn baa bab bac bag bai ban bay bba bbb bbc bbg bbi bbn bby bca bcb bcc bcg bci bcn bcy bga bgb bgc bgg bgi bgn bi- bia bib bic big bii bin biy bna bnb bnc bng bni bnn by- bya byc byg byi byn c-- caa cab cac cag cai can cay cba cbb cbc cbg cbi cbn cby cca ccb ccc ccg cci ccn cga cgb cgc cgg cgi cgn cgy ci- cia cib cic cig cii cin cn- cna cnb cnc cng cni cnn cny cya cyb cyc cyg cyn gaa gab gac gag gai gan gay gba gbc gbg gbi gbn gby gca gcb gcc gcg gci gcn gga ggb ggc ggg ggi ggn gia gib gic gig gii gin giy gna gnb gnc gni gnn gy- gya gyb gyn ia- iaa iab iac iag iai ian iba ibb ibc ibg ibi ibn iby ica icb icc icg ici icn icy iga igb igc igg igi ign igy iia iib iic iii iin in- ina inb inc ing ini inn iny iya iyc iyy n-i naa nab nac nag nai nan nay nba nbb nbc nbg nbi nbn nca ncb ncc ncg nci ncn nga ngb ngc ngg ngi ngn nia nib nic nig nii nin nna nnb nnc nng nni nnn nya nyc nyg nyn nyy yaa yab yac yag yai yan yay ybc ybg ybi yby yca ycc yci ycy yga ygc yig yii yin yna yng ynn yny yyb yyc yyg yyy