-ic -ol bbb bbc bbi bbk bbl bbm bbo bbr bcb bcc bci bck bcl bcm bco bcr bi- bib bic bii bik bil bim bio bir bkb bkc bkk bkl bkm bko bkr blb blc bli blk bll blm blo blr bmb bmc bmi bmk bml bmm bmo bmr bob boc boi bok bol bom boo bor brb bri brk brl brm bro brr c-- cbb cbc cbi cbk cbl cbm cbo cbr ccb ccc cci cck ccl ccm cco ccr ci- cib cic cii cik cil cim cio cir ckb ckc cki ckm cko cl- clb clc cli clk cll clm clo clr cmb cmc cmi cmk cml cmm cmo cmr co- cob coc coi cok col com coo cor crb crc cri crk crl crm cro crr ibb ibc ibi ibk ibl ibm ibo ibr icb icc ici ick icl icm ico icr iib iic iii iil iim iio iir ikb ikc iki ikk ikl iko ikr il- ilb ilc ili ilk ill ilm ilo ilr im- imb imc imi iml imm imo io- iob ioc ioi iol iom ioo ior ir- irb irc iri irk irl irm iro irr kbb kbc kbi kbk kbl kbm kbo kbr kcb kcc kci kck kcl kcm kcr kib kic kii kik kil kim kio kir kkb kkc kki kkk kkl kkm kkr kl- klb klc kli klm klo klr kmb kmc kmi kmk kml kmm kmo kob koc koi kok kol kom koo kor krc kri krk krl kro krr lbb lbc lbi lbk lbl lbm lbo lbr lcb lcc lci lck lcl lcm lco lcr lib lic lii lik lil lim lio lir lkb lkl lkr llb llc lli llk lll llm llo llr lmb lmc lmi lmk lml lmm lmo lmr lob loc loi lok lol lom loo lor lrb lrc lri lrk lrm lro lrr m-o m-r mbb mbc mbi mbk mbl mbm mbo mbr mc- mcb mcc mci mck mcl mcm mco mcr mi- mib mic mii mik mil mim mio mir mkb mkc mkk mkl mkm mko mkr mlb mlc mli mlk mll mlm mlo mlr mmb mmc mmi mmk mml mmm mmo mmr mob moc moi mok mol mom moo mor mrb mrc mri mrk mrl mrm mro mrr o-i ob- obb obc obi obk obl obm obo obr oc- ocb occ oci ock ocl ocm oco ocr oib oic oii oik oil oim oio oir okb okc oki okk okl oko okr olb olc oli olk oll olm olo om- omb omc omi oml omm omo omr oo- oob ooc ooi ook ool oom ooo oor or- orb orc ori ork orl orm oro orr rbb rbc rbi rbk rbl rbm rbo rbr rcb rcc rci rcl rcm rco rcr rib ric rii rik ril rim rio rir rkb rkc rkk rkm rko rlc rli rll rlm rlo rlr rmb rmc rmi rml rmm rmo rmr rob roc roi rok rol rom roo ror rrb rrc rri rrk rrl rrm rrr