-up c-- ccc ccp ccr ccs cct ccu cpc cpp cpr cps cpt cpu crc crp crr crs crt cru cry csc csp csr css cst csu csy ctc ctp ctr cts ctt ctu cty cuc cup cur cus cut cuu cuy cyc cyp cyr cys cyt p-p pcc pcp pcr pcs pct pcu ppc ppp ppr pps ppt ppu prc prp prr prs prt pru pry ps- psc psp psr pss pst psu psy pt- ptc ptp ptr pts ptt ptu pty puc pup pur pus put puu puy py- pyc pyr pys pyt pyu rcc rcp rcr rcs rct rcu rpc rpp rpr rps rpt rpu rrc rrp rrr rrs rrt rru rsc rsp rsr rss rst rsu rtc rtp rtr rts rtt rtu rty ruc rup rur rus rut ruu ruy ry- ryc ryr rys ryu ryy scc scp scr scs sct scu spc spp spr sps spt spu spy sr- src srp srr srs srt sry ss- ssc ssp ssr sss sst ssu stc stp str sts stt stu sty suc sup sur sus sut suu suy sy- syc syp syr sys syt syu tcc tcp tcr tcs tct tcu tpc tpp tpr tps tpt tpu trc trp trr trs trt tru try tsc tsp tsr tss tst tsu tsy ttc ttp ttr tts ttt ttu tty tuc tup tur tus tut tuu tuy tyc typ tyr tys tyt ucc ucp ucr ucs uct ucu up- upc upp upr ups upt upu ur- urc urp urr urs urt uru ury usc usp usr uss ust usu utc utp utr uts utt utu uty uuc uur uus uut uuu uyc uys uyu ycc ycp ycs ycu ycy yps ypu yrc yrp yrs yrt yru ysc ysp ysr yss yst ysu ysy ytc ytp ytr yts ytt ytu yup yur yus yut yuu yuy yyc yys yyt yyu yyy