-ic bbb bbc bbg bbi bbo bbr bcb bcc bcg bci bco bcr bcv bgb bgc bgg bgi bgo bgr bgv bi- bib bic big bii bio bir biv bob boc bog boi boo bor bov brb brg bri bro brr brv bvb bvc bvg bvi bvo bvr bvv c-- cbb cbc cbg cbi cbo cbr cbv ccb ccc ccg cci cco ccr ccv cgb cgc cgg cgi cgo cgr cgv ci- cib cic cig cii cio cir civ co- cob coc cog coi coo cor cov crb crc crg cri cro crr crv cvb cvc cvg cvi cvo cvr cvv gbc gbg gbi gbo gbr gbv gcb gcc gcg gci gco gcr ggb ggc ggg ggi ggo ggr ggv gib gic gig gii gio gir giv gob goc gog goi goo gor gov grb grc grg gri gro grr grv gvb gvc gvg gvi gvo gvr i-v ibb ibc ibg ibi ibo ibr ibv icb icc icg ici ico icr icv igb igc igg igi igo igr iib iic iii iio iir io- iob ioc iog ioi ioo ior iov ir- irb irc irg iri iro irr irv ivb ivc ivg ivi ivo ivr ivv o-i ob- obb obc obg obi obo obr obv oc- ocb occ ocg oci oco ocr ocv ogc ogg ogi ogo oib oic oii oio oir oiv oo- oob ooc oog ooi ooo oor oov or- orb orc org ori oro orr orv ov- ovb ovc ovi ovo ovv rbb rbc rbg rbi rbo rbr rcb rcc rcg rci rco rcr rcv rgb rgc rgg rgi rgo rgr rgv rib ric rig rii rio rir riv rob roc rog roi roo ror rov rrb rrc rrg rri rrr rvb rvc rvg rvi rvo rvr rvv vbc vbg vbi vbo vbr vbv vcc vci vco vcr vgc vgg vgo vgr vi- vib vic vig vii vio vir viv vob voc vog voi voo vor vov vrb vrc vrg vri vrr vvb vvc vvg vvi vvo vvr vvv