-ic bbb bbc bbg bbi bbo bcb bcc bcg bci bco bcv bgb bgc bgg bgi bgo bgv bi- bib bic big bii bio biv bob boc bog boi boo bov bvb bvc bvg bvi bvo bvv c-- cbb cbc cbg cbi cbo cbv ccb ccc ccg cci cco ccv cgb cgc cgg cgi cgo cgv ci- cib cic cig cii cio civ co- cob coc cog coi coo cov cvb cvc cvg cvi cvo cvv gbc gbg gbi gbo gbv gcb gcc gcg gci gco ggb ggc ggg ggi ggo ggv gib gic gig gii gio giv gob goc gog goi goo gov gvb gvc gvg gvi gvo i-v ibb ibc ibg ibi ibo ibv icb icc icg ici ico icv igb igc igg igi igo iib iic iii iio io- iob ioc iog ioi ioo iov ivb ivc ivg ivi ivo ivv o-i ob- obb obc obg obi obo obv oc- ocb occ ocg oci oco ocv ogc ogg ogi ogo oib oic oii oio oiv oo- oob ooc oog ooi ooo oov ov- ovb ovc ovi ovo ovv vbc vbg vbi vbo vbv vcc vci vco vgc vgg vgo vi- vib vic vig vii vio viv vob voc vog voi voo vov vvb vvc vvg vvi vvo vvv