-ic a-a a-b a-c a-i aaa aab aac aag aai ab- aba abb abc abg abi ac- aca acb acc acg aci ag- aga agb agc agg agi ai- aia aib aic aig aii baa bab bac bag bai bba bbb bbc bbg bbi bca bcb bcc bcg bci bga bgb bgc bgg bgi bi- bia bib bic big bii c-- caa cab cac cag cai cba cbb cbc cbg cbi cca ccb ccc ccg cci cga cgb cgc cgg cgi ci- cia cib cic cig cii gaa gab gac gag gai gba gbc gbg gbi gca gcb gcc gcg gci gga ggb ggc ggg ggi gia gib gic gig gii ia- iaa iab iac iag iai iba ibb ibc ibg ibi ica icb icc icg ici iga igb igc igg igi iia iib iic iii