c-- ccc ccm ccp ccr cct cmc cmm cmp cmr cmt cmy cpc cpm cpp cpr cpt crc crm crp crr crt cry ctc ctm ctp ctr ctt cty cyc cym cyp cyr cyt m-r mc- mcc mcm mcp mcr mct mmc mmm mmp mmr mmt mpc mpm mpp mpr mpt mrc mrm mrp mrr mrt mry mtc mtm mtp mtr mtt my- myc mym myr myt p-p pcc pcm pcp pcr pct pmc pmm pmp pmr pmt ppc ppm ppp ppr ppt prc prm prp prr prt pry pt- ptc ptm ptp ptr ptt pty py- pyc pym pyr pyt rcc rcm rcp rcr rct rmc rmm rmp rmr rmt rpc rpm rpp rpr rpt rrc rrm rrp rrr rrt rtc rtm rtp rtr rtt rty ry- ryc rym ryr ryy tcc tcm tcp tcr tct tmc tmm tmp tmr tmt tmy tpc tpm tpp tpr tpt trc trm trp trr trt try ttc ttm ttp ttr ttt tty tyc tym typ tyr tyt ycc ycp ycy ymc ymm ymt yrc yrp yrt ytc ytm ytp ytr ytt yyc yyt yyy