-ol kkk kkl kkr kks kkv kl- klo klr kls klv kok kol koo kor kos krk krl kro krr krs krv ksk ksl kso ksr kss ksv kvk kvo kvr kvs kvv lkl lkr lks llk lll llo llr lls llv lok lol loo lor los lov lrk lro lrr lrs lrv lsk lsl lso lsr lss lsv lvl lvr lvs lvv okk okl oko okr oks olk oll olo ols oo- ook ool ooo oor oos oov or- ork orl oro orr ors orv os- osk osl oso osr oss osv ov- ovl ovo ovs ovv rkk rko rks rkv rll rlo rlr rls rok rol roo ror ros rov rrk rrl rrr rrs rsk rsl rso rsr rss rsv rvl rvo rvr rvs rvv sk- skk skl sko skr sks slk sll slo slr sls slv sok sol soo sor sos sov sr- srk srl sro srr srs srv ss- ssk ssl sso ssr sss ssv svk svl svo svr svs svv vl- vlk vll vlo vls vlv vok vol voo vor vos vov vrk vrr vrs vsk vsl vso vsr vss vsv vvo vvr vvs vvv