-ic -ol c-- ccc cci cck ccl cco ccr ccs ci- cic cii cik cil cio cir cis ckc cki cko cks cl- clc cli clk cll clo clr cls co- coc coi cok col coo cor cos crc cri crk crl cro crr crs csc csi csk csl cso csr css icc ici ick icl ico icr ics iic iii iil iio iir iis ikc iki ikk ikl iko ikr iks il- ilc ili ilk ill ilo ilr ils io- ioc ioi iol ioo ior ios ir- irc iri irk irl iro irr irs is- isc isi isk isl iso isr iss kcc kci kck kcl kcr kcs kic kii kik kil kio kir kis kkc kki kkk kkl kkr kks kl- klc kli klo klr kls koc koi kok kol koo kor kos krc kri krk krl kro krr krs ksc ksi ksk ksl kso ksr kss lcc lci lck lcl lco lcr lcs lic lii lik lil lio lir lis lkl lkr lks llc lli llk lll llo llr lls loc loi lok lol loo lor los lrc lri lrk lro lrr lrs lsc lsi lsk lsl lso lsr lss o-i oc- occ oci ock ocl oco ocr ocs oic oii oik oil oio oir ois okc oki okk okl oko okr oks olc oli olk oll olo ols oo- ooc ooi ook ool ooo oor oos or- orc ori ork orl oro orr ors os- osc osi osk osl oso osr oss rcc rci rcl rco rcr rcs ric rii rik ril rio rir ris rkc rkk rko rks rlc rli rll rlo rlr rls roc roi rok rol roo ror ros rrc rri rrk rrl rrr rrs rsc rsi rsk rsl rso rsr rss scc sci sck scl sco scr scs sic sii sik sil sio sir sis sk- skc ski skk skl sko skr sks slc sli slk sll slo slr sls soc soi sok sol soo sor sos sr- src sri srk srl sro srr srs ss- ssc ssi ssk ssl sso ssr sss