-ic -ol bbb bbc bbi bbl bbo bbr bcb bcc bci bcl bco bcr bcv bi- bib bic bii bil bio bir biv blb blc bli bll blo blr blv bob boc boi bol boo bor bov brb bri brl bro brr brv bvb bvc bvi bvl bvo bvr bvv c-- cbb cbc cbi cbl cbo cbr cbv ccb ccc cci ccl cco ccr ccv ci- cib cic cii cil cio cir civ cl- clb clc cli cll clo clr clv co- cob coc coi col coo cor cov crb crc cri crl cro crr crv cvb cvc cvi cvl cvo cvr cvv i-v ibb ibc ibi ibl ibo ibr ibv icb icc ici icl ico icr icv iib iic iii iil iio iir il- ilb ilc ili ill ilo ilr ilv io- iob ioc ioi iol ioo ior iov ir- irb irc iri irl iro irr irv ivb ivc ivi ivl ivo ivr ivv lbb lbc lbi lbl lbo lbr lbv lcb lcc lci lcl lco lcr lcv lib lic lii lil lio lir liv llb llc lli lll llo llr llv lob loc loi lol loo lor lov lrb lrc lri lro lrr lrv lvb lvc lvi lvl lvr lvv o-i ob- obb obc obi obl obo obr obv oc- ocb occ oci ocl oco ocr ocv oib oic oii oil oio oir oiv olb olc oli oll olo oo- oob ooc ooi ool ooo oor oov or- orb orc ori orl oro orr orv ov- ovb ovc ovi ovl ovo ovv rbb rbc rbi rbl rbo rbr rcb rcc rci rcl rco rcr rcv rib ric rii ril rio rir riv rlc rli rll rlo rlr rob roc roi rol roo ror rov rrb rrc rri rrl rrr rvb rvc rvi rvl rvo rvr rvv vbc vbi vbl vbo vbr vbv vcc vci vcl vco vcr vi- vib vic vii vil vio vir viv vl- vlb vlc vll vlo vlv vob voc voi vol voo vor vov vrb vrc vri vrr vvb vvc vvi vvo vvr vvv