-er -up c-- ccc ccd cce cco ccp ccr ccs cct ccu cdc cdd cde cdo cdp cdr cds cdt cdu ce- cec ced cee ceo cep cer ces cet ceu co- coc cod coe coo cop cor cos cot cou cpc cpd cpe cpo cpp cpr cps cpt cpu crc crd cre cro crp crr crs crt cru csc csd cse cso csp csr css cst csu ctc ctd cte cto ctp ctr cts ctt ctu cuc cud cue cuo cup cur cus cut cuu dcc dcd dce dco dcp dcr dcs dct dcu ddc ddd dde ddo ddp ddr dds ddt ddu de- dec ded dee deo dep der des det deu doc dod doe doo dop dor dos dot dou dpc dpd dpe dpo dpp dpr dps dpt dpu drc drd dre dro drp drr drs drt dru dsc dsd dse dso dsp dsr dss dst dsu dtc dtd dte dto dtp dtr dts dtt dtu duc dud due duo dup dur dus dut ec- ecc ecd ece eco ecr ecs ect ecu ed- edc edd ede edo edp edr eds edt edu eec eed eee eeo eep eer ees eet eo- eoc eod eoe eoo eop eor eos eot eou ep- epc epd epe epo epp epr eps ept epu erc erd ere ero erp err ers ert eru es- esc esd ese eso esp esr ess est esu etc etd ete eto etp etr ets ett etu eu- euc eud eue eup eur eus eut oc- occ ocd oco ocp ocr ocs oct ocu odc odd ode odo odp odr ods odt odu oec oed oee oeo oep oer oes oet oo- ooc ood ooo oop oor oos oot op- opc opd ope opo opp opr ops opt or- orc ord ore oro orp orr ors ort oru os- osc osd ose oso osp osr oss ost osu ot- otc otd ote oto otp otr ots ott otu ou- ouc oud oue ouo oup our ous out p-p pcc pcd pce pco pcp pcr pcs pct pcu pdc pdd pde pdo pdp pdr pds pdt pdu pec ped pee peo pep per pes pet peu poc pod poe poo pop por pos pot pou ppc ppd ppe ppo ppp ppr pps ppt ppu prc prd pre pro prp prr prs prt pru ps- psc psd pse pso psp psr pss pst psu pt- ptc ptd pte pto ptp ptr pts ptt ptu puc pud pue pup pur pus put puu rcc rcd rce rco rcp rcr rcs rct rcu rdc rdd rde rdo rdp rdr rds rdt rdu re- rec red ree reo rep rer res ret reu roc rod roe roo rop ror ros rot rou rpc rpd rpe rpo rpp rpr rps rpt rpu rrc rrd rrp rrr rrs rrt rru rsc rsd rse rso rsp rsr rss rst rsu rtc rtd rte rto rtp rtr rts rtt rtu ruc rud rue ruo rup rur rus rut ruu scc scd sce sco scp scr scs sct scu sdc sdd sde sdo sdp sdr sds sdt sdu se- sec sed see seo sep ser ses set seu soc sod soe soo sop sor sos sot sou spc spd spe spo spp spr sps spt spu sr- src srd sre sro srp srr srs srt ss- ssc ssd sse sso ssp ssr sss sst ssu stc std ste sto stp str sts stt stu suc sud sue suo sup sur sus sut suu tcc tcd tce tco tcp tcr tcs tct tcu tdc tdd tde tdo tdp tdr tds tdt tdu te- tec ted tee teo tep ter tes tet teu to- toc tod toe too top tor tos tot tou tpc tpd tpe tpo tpp tpr tps tpt tpu trc trd tre tro trp trr trs trt tru tsc tsd tse tso tsp tsr tss tst tsu ttc ttd tte tto ttp ttr tts ttt ttu tuc tud tue tuo tup tur tus tut tuu ucc ucd uce uco ucp ucr ucs uct ucu udc udd ude udo udp udr uds udt udu uec ued uee uep uer ues uet uoc uod uoe uoo uop uor uos uot up- upc upd upe upo upp upr ups upt upu ur- urc urd ure uro urp urr urs urt uru usc usd use uso usp usr uss ust usu utc utd ute uto utp utr uts utt utu uuc uue uur uus uut uuu