-up c-- ccc cco ccp ccr ccs cct ccu co- coc coo cop cor cos cot cou coy cpc cpo cpp cpr cps cpt cpu crc cro crp crr crs crt cru cry csc cso csp csr css cst csu csy ctc cto ctp ctr cts ctt ctu cty cuc cuo cup cur cus cut cuu cuy cyc cyo cyp cyr cys cyt oc- occ oco ocp ocr ocs oct ocu oo- ooc ooo oop oor oos oot op- opc opo opp opr ops opt opy or- orc oro orp orr ors ort oru ory os- osc oso osp osr oss ost osu ot- otc oto otp otr ots ott otu ou- ouc ouo oup our ous out oyo oys p-p pcc pco pcp pcr pcs pct pcu poc poo pop por pos pot pou poy ppc ppo ppp ppr pps ppt ppu prc pro prp prr prs prt pru pry ps- psc pso psp psr pss pst psu psy pt- ptc pto ptp ptr pts ptt ptu pty puc pup pur pus put puu puy py- pyc pyo pyr pys pyt pyu rcc rco rcp rcr rcs rct rcu roc roo rop ror ros rot rou roy rpc rpo rpp rpr rps rpt rpu rrc rrp rrr rrs rrt rru rsc rso rsp rsr rss rst rsu rtc rto rtp rtr rts rtt rtu rty ruc ruo rup rur rus rut ruu ruy ry- ryc ryo ryr rys ryu ryy scc sco scp scr scs sct scu soc soo sop sor sos sot sou soy spc spo spp spr sps spt spu spy sr- src sro srp srr srs srt sry ss- ssc sso ssp ssr sss sst ssu stc sto stp str sts stt stu sty suc suo sup sur sus sut suu suy sy- syc syp syr sys syt syu tcc tco tcp tcr tcs tct tcu to- toc too top tor tos tot tou toy tpc tpo tpp tpr tps tpt tpu trc tro trp trr trs trt tru try tsc tso tsp tsr tss tst tsu tsy ttc tto ttp ttr tts ttt ttu tty tuc tuo tup tur tus tut tuu tuy tyc tyo typ tyr tys tyt ucc uco ucp ucr ucs uct ucu uoc uoo uop uor uos uot up- upc upo upp upr ups upt upu ur- urc uro urp urr urs urt uru ury usc uso usp usr uss ust usu utc uto utp utr uts utt utu uty uuc uur uus uut uuu uyc uyo uys uyu ycc yco ycp ycs ycu ycy yoc yoo yop yor yos yot you yoy ypo yps ypu yrc yro yrp yrs yrt yru ysc yso ysp ysr yss yst ysu ysy ytc yto ytp ytr yts ytt ytu yuo yup yur yus yut yuu yuy yyc yys yyt yyu yyy