c-- ccc ccn ccr ccs cct cn- cnc cnn cnr cns cnt cny crc crn crr crs crt cry csc csn csr css cst csy ctc ctn ctr cts ctt cty cyc cyn cyr cys cyt ncc ncn ncr ncs nct nnc nnn nns nnt nrc nrn nrr nrs nrt nry nsc nsn nsr nss nst nsy ntc ntn ntr nts ntt nyc nyn nys nyt nyy rcc rcn rcr rcs rct rnc rnn rnr rns rnt rny rrc rrn rrr rrs rrt rsc rsn rsr rss rst rtc rtn rtr rts rtt rty ry- ryc ryn ryr rys ryy scc scn scr scs sct snc snn snr sns snt sny sr- src srn srr srs srt sry ss- ssc ssn ssr sss sst stc stn str sts stt sty sy- syc syn syr sys syt tcc tcn tcr tcs tct tnc tnn tnr tns tnt trc trn trr trs trt try tsc tsn tsr tss tst tsy ttc ttn ttr tts ttt tty tyc tyn tyr tys tyt ycc ycs ycy ynn yns yny yrc yrn yrs yrt ysc ysr yss yst ysy ytc ytn ytr yts ytt yyc yys yyt yyy