c-- ccc cce ccl ccs cct ccv ce- cec cee cel ces cet cev cl- clc cle cll cls clt clv csc cse csl css cst csv ctc cte ctl cts ctt ctv cvc cve cvl cvs cvt cvv ec- ecc ece ecl ecs ect ecv eec eee eel ees eet eev elc ele ell els elt elv es- esc ese esl ess est esv etc ete etl ets ett etv evc eve evl evs evt evv lcc lce lcl lcs lct lcv lec lee lel les let lev llc lle lll lls llt llv lsc lse lsl lss lst lsv ltc lte ltl lts ltt ltv lvc lve lvl lvs lvt lvv scc sce scl scs sct scv se- sec see sel ses set sev slc sle sll sls slt slv ss- ssc sse ssl sss sst ssv stc ste stl sts stt stv svc sve svl svs svt svv tcc tce tcl tcs tct tcv te- tec tee tel tes tet tev tlc tle tll tls tlt tlv tsc tse tsl tss tst tsv ttc tte ttl tts ttt ttv tvc tve tvl tvs tvt v-e vcc vce vcl vcs vct vec vee vel ves vet vl- vlc vle vll vls vlt vlv vsc vse vsl vss vst vsv vtc vte vtl vts vtt vtv vvc vvs vvt vvv