-er c-- ccc cce ccl ccr ccs cct ccv ce- cec cee cel cer ces cet cev cl- clc cle cll clr cls clt clv crc cre crl crr crs crt crv csc cse csl csr css cst csv ctc cte ctl ctr cts ctt ctv cvc cve cvl cvr cvs cvt cvv ec- ecc ece ecl ecr ecs ect ecv eec eee eel eer ees eet eev elc ele ell elr els elt elv erc ere erl err ers ert erv es- esc ese esl esr ess est esv etc ete etl etr ets ett etv evc eve evl evr evs evt evv lcc lce lcl lcr lcs lct lcv lec lee lel ler les let lev llc lle lll llr lls llt llv lrc lrr lrs lrt lrv lsc lse lsl lsr lss lst lsv ltc lte ltl ltr lts ltt ltv lvc lve lvl lvr lvs lvt lvv rcc rce rcl rcr rcs rct rcv re- rec ree rel rer res ret rev rlc rle rll rlr rls rlt rrc rrl rrr rrs rrt rsc rse rsl rsr rss rst rsv rtc rte rtl rtr rts rtt rtv rvc rve rvl rvr rvs rvt rvv scc sce scl scr scs sct scv se- sec see sel ser ses set sev slc sle sll slr sls slt slv sr- src sre srl srr srs srt srv ss- ssc sse ssl ssr sss sst ssv stc ste stl str sts stt stv svc sve svl svr svs svt svv tcc tce tcl tcr tcs tct tcv te- tec tee tel ter tes tet tev tlc tle tll tlr tls tlt tlv trc tre trl trr trs trt trv tsc tse tsl tsr tss tst tsv ttc tte ttl ttr tts ttt ttv tvc tve tvl tvr tvs tvt v-e vcc vce vcl vcr vcs vct vec vee vel ver ves vet vl- vlc vle vll vls vlt vlv vrc vre vrr vrs vrt vsc vse vsl vsr vss vst vsv vtc vte vtl vtr vts vtt vtv vvc vvr vvs vvt vvv