-up c-- ccc ccd cco ccp ccr cct ccu cdc cdd cdo cdp cdr cdt cdu co- coc cod coo cop cor cot cou cpc cpd cpo cpp cpr cpt cpu crc crd cro crp crr crt cru ctc ctd cto ctp ctr ctt ctu cuc cud cuo cup cur cut cuu dcc dcd dco dcp dcr dct dcu ddc ddd ddo ddp ddr ddt ddu doc dod doo dop dor dot dou dpc dpd dpo dpp dpr dpt dpu drc drd dro drp drr drt dru dtc dtd dto dtp dtr dtt dtu duc dud duo dup dur dut oc- occ ocd oco ocp ocr oct ocu odc odd odo odp odr odt odu oo- ooc ood ooo oop oor oot op- opc opd opo opp opr opt or- orc ord oro orp orr ort oru ot- otc otd oto otp otr ott otu ou- ouc oud ouo oup our out p-p pcc pcd pco pcp pcr pct pcu pdc pdd pdo pdp pdr pdt pdu poc pod poo pop por pot pou ppc ppd ppo ppp ppr ppt ppu prc prd pro prp prr prt pru pt- ptc ptd pto ptp ptr ptt ptu puc pud pup pur put puu rcc rcd rco rcp rcr rct rcu rdc rdd rdo rdp rdr rdt rdu roc rod roo rop ror rot rou rpc rpd rpo rpp rpr rpt rpu rrc rrd rrp rrr rrt rru rtc rtd rto rtp rtr rtt rtu ruc rud ruo rup rur rut ruu tcc tcd tco tcp tcr tct tcu tdc tdd tdo tdp tdr tdt tdu to- toc tod too top tor tot tou tpc tpd tpo tpp tpr tpt tpu trc trd tro trp trr trt tru ttc ttd tto ttp ttr ttt ttu tuc tud tuo tup tur tut tuu ucc ucd uco ucp ucr uct ucu udc udd udo udp udr udt udu uoc uod uoo uop uor uot up- upc upd upo upp upr upt upu ur- urc urd uro urp urr urt uru utc utd uto utp utr utt utu uuc uur uut uuu