c-- ccc ccl ccn ccr ccs cct cl- clc cll cln clr cls clt cn- cnc cnl cnn cnr cns cnt crc crl crn crr crs crt csc csl csn csr css cst ctc ctl ctn ctr cts ctt lcc lcl lcn lcr lcs lct llc lll lln llr lls llt lnc lnl lnn lnr lns lnt lrc lrn lrr lrs lrt lsc lsl lsn lsr lss lst ltc ltl ltr lts ltt ncc ncl ncn ncr ncs nct nlc nll nln nlr nls nlt nnc nnl nnn nns nnt nrc nrl nrn nrr nrs nrt nsc nsl nsn nsr nss nst ntc ntn ntr nts ntt rcc rcl rcn rcr rcs rct rlc rll rln rlr rls rlt rnc rnn rnr rns rnt rrc rrl rrn rrr rrs rrt rsc rsl rsn rsr rss rst rtc rtl rtn rtr rts rtt scc scl scn scr scs sct slc sll sln slr sls slt snc snl snn snr sns snt sr- src srl srn srr srs srt ss- ssc ssl ssn ssr sss sst stc stl stn str sts stt tcc tcl tcn tcr tcs tct tlc tll tln tlr tls tlt tnc tnl tnn tnr tns tnt trc trl trn trr trs trt tsc tsl tsn tsr tss tst ttc ttl ttn ttr tts ttt