-ol c-- ccc ccd ccl cco ccr ccs cct cdc cdd cdl cdo cdr cds cdt cl- clc cld cll clo clr cls clt co- coc cod col coo cor cos cot crc crd crl cro crr crs crt csc csd csl cso csr css cst ctc ctd ctl cto ctr cts ctt dcc dcd dcl dco dcr dcs dct ddc ddd ddl ddo ddr dds ddt dl- dlc dld dll dlo dlr dls dlt doc dod dol doo dor dos dot drc drd drl dro drr drs drt dsc dsd dsl dso dsr dss dst dtc dtd dtl dto dtr dts dtt lcc lcd lcl lco lcr lcs lct ldc ldd ldl ldo ldr lds ldt llc lld lll llo llr lls llt loc lod lol loo lor los lot lrc lrd lro lrr lrs lrt lsc lsd lsl lso lsr lss lst ltc ltd ltl lto ltr lts ltt oc- occ ocd ocl oco ocr ocs oct odc odd odl odo odr ods odt olc old oll olo ols olt oo- ooc ood ool ooo oor oos oot or- orc ord orl oro orr ors ort os- osc osd osl oso osr oss ost ot- otc otd otl oto otr ots ott rcc rcd rcl rco rcr rcs rct rdc rdd rdl rdo rdr rds rdt rlc rld rll rlo rlr rls rlt roc rod rol roo ror ros rot rrc rrd rrl rrr rrs rrt rsc rsd rsl rso rsr rss rst rtc rtd rtl rto rtr rts rtt scc scd scl sco scr scs sct sdc sdd sdl sdo sdr sds sdt slc sld sll slo slr sls slt soc sod sol soo sor sos sot sr- src srd srl sro srr srs srt ss- ssc ssd ssl sso ssr sss sst stc std stl sto str sts stt tcc tcd tcl tco tcr tcs tct tdc tdd tdl tdo tdr tds tdt tlc tld tll tlo tlr tls tlt to- toc tod tol too tor tos tot trc trd trl tro trr trs trt tsc tsd tsl tso tsr tss tst ttc ttd ttl tto ttr tts ttt