-up c-- ccc ccd cco ccp ccr ccs ccu cdc cdd cdo cdp cdr cds cdu cdy co- coc cod coo cop cor cos cou coy cpc cpd cpo cpp cpr cps cpu crc crd cro crp crr crs cru cry csc csd cso csp csr css csu csy cuc cud cuo cup cur cus cuu cuy cyc cyd cyo cyp cyr cys dcc dcd dco dcp dcr dcs dcu ddc ddd ddo ddp ddr dds ddu ddy doc dod doo dop dor dos dou doy dpc dpd dpo dpp dpr dps dpu drc drd dro drp drr drs dru dry dsc dsd dso dsp dsr dss dsu dsy duc dud duo dup dur dus duy dy- dyc dyd dyo dyp dyr dys dyu dyy oc- occ ocd oco ocp ocr ocs ocu odc odd odo odp odr ods odu oo- ooc ood ooo oop oor oos op- opc opd opo opp opr ops opy or- orc ord oro orp orr ors oru ory os- osc osd oso osp osr oss osu ou- ouc oud ouo oup our ous oyd oyo oys p-p pcc pcd pco pcp pcr pcs pcu pdc pdd pdo pdp pdr pds pdu poc pod poo pop por pos pou poy ppc ppd ppo ppp ppr pps ppu prc prd pro prp prr prs pru pry ps- psc psd pso psp psr pss psu psy puc pud pup pur pus puu puy py- pyc pyd pyo pyr pys pyu rcc rcd rco rcp rcr rcs rcu rdc rdd rdo rdp rdr rds rdu rdy roc rod roo rop ror ros rou roy rpc rpd rpo rpp rpr rps rpu rrc rrd rrp rrr rrs rru rsc rsd rso rsp rsr rss rsu ruc rud ruo rup rur rus ruu ruy ry- ryc ryd ryo ryr rys ryu ryy scc scd sco scp scr scs scu sdc sdd sdo sdp sdr sds sdu sdy soc sod soo sop sor sos sou soy spc spd spo spp spr sps spu spy sr- src srd sro srp srr srs sry ss- ssc ssd sso ssp ssr sss ssu suc sud suo sup sur sus suu suy sy- syc syd syp syr sys syu ucc ucd uco ucp ucr ucs ucu udc udd udo udp udr uds udu uoc uod uoo uop uor uos up- upc upd upo upp upr ups upu ur- urc urd uro urp urr urs uru ury usc usd uso usp usr uss usu uuc uur uus uuu uyc uyo uys uyu ycc ycd yco ycp ycs ycu ycy ydo yds ydy yoc yod yoo yop yor yos you yoy ypd ypo yps ypu yrc yro yrp yrs yru ysc yso ysp ysr yss ysu ysy yud yuo yup yur yus yuu yuy yyc yys yyu yyy