-ol c-- ccc ccl cco ccr ccs cct cl- clc cll clo clr cls clt co- coc col coo cor cos cot crc crl cro crr crs crt csc csl cso csr css cst ctc ctl cto ctr cts ctt lcc lcl lco lcr lcs lct llc lll llo llr lls llt loc lol loo lor los lot lrc lro lrr lrs lrt lsc lsl lso lsr lss lst ltc ltl lto ltr lts ltt oc- occ ocl oco ocr ocs oct olc oll olo ols olt oo- ooc ool ooo oor oos oot or- orc orl oro orr ors ort os- osc osl oso osr oss ost ot- otc otl oto otr ots ott rcc rcl rco rcr rcs rct rlc rll rlo rlr rls rlt roc rol roo ror ros rot rrc rrl rrr rrs rrt rsc rsl rso rsr rss rst rtc rtl rto rtr rts rtt scc scl sco scr scs sct slc sll slo slr sls slt soc sol soo sor sos sot sr- src srl sro srr srs srt ss- ssc ssl sso ssr sss sst stc stl sto str sts stt tcc tcl tco tcr tcs tct tlc tll tlo tlr tls tlt to- toc tol too tor tos tot trc trl tro trr trs trt tsc tsl tso tsr tss tst ttc ttl tto ttr tts ttt