-ic bbb bbc bbg bbi bbo bcb bcc bcg bci bco bgb bgc bgg bgi bgo bi- bib bic big bii bio bob boc bog boi boo c-- cbb cbc cbg cbi cbo ccb ccc ccg cci cco cgb cgc cgg cgi cgo ci- cib cic cig cii cio co- cob coc cog coi coo gbc gbg gbi gbo gcb gcc gcg gci gco ggb ggc ggg ggi ggo gib gic gig gii gio gob goc gog goi goo ibb ibc ibg ibi ibo icb icc icg ici ico igb igc igg igi igo iib iic iii iio io- iob ioc iog ioi ioo o-i ob- obb obc obg obi obo oc- ocb occ ocg oci oco ogc ogg ogi ogo oib oic oii oio oo- oob ooc oog ooi ooo