-er -up c-- ccc ccd cce cco ccp ccr ccu ccv cdc cdd cde cdo cdp cdr cdu cdv ce- cec ced cee ceo cep cer ceu cev co- coc cod coe coo cop cor cou cov cpc cpd cpe cpo cpp cpr cpu cpv crc crd cre cro crp crr cru crv cuc cud cue cuo cup cur cuu cuv cvc cvd cve cvo cvp cvr cvu cvv dcc dcd dce dco dcp dcr dcu dcv ddc ddd dde ddo ddp ddr ddu de- dec ded dee deo dep der deu dev doc dod doe doo dop dor dou dov dpc dpd dpe dpo dpp dpr dpu dpv drc drd dre dro drp drr dru drv duc dud due duo dup dur duv dvc dvd dve dvp dvr dvu ec- ecc ecd ece eco ecr ecu ecv ed- edc edd ede edo edp edr edu eec eed eee eeo eep eer eev eo- eoc eod eoe eoo eop eor eou ep- epc epd epe epo epp epr epu erc erd ere ero erp err eru erv eu- euc eud eue eup eur euv evc evd eve evo evp evr evv oc- occ ocd oco ocp ocr ocu ocv odc odd ode odo odp odr odu odv oec oed oee oeo oep oer oo- ooc ood ooo oop oor oov op- opc opd ope opo opp opr opv or- orc ord ore oro orp orr oru orv ou- ouc oud oue ouo oup our ov- ovc ovd ove ovo ovp ovv p-p pcc pcd pce pco pcp pcr pcu pcv pdc pdd pde pdo pdp pdr pdu pdv pec ped pee peo pep per peu pev poc pod poe poo pop por pou pov ppc ppd ppe ppo ppp ppr ppu ppv prc prd pre pro prp prr pru prv puc pud pue pup pur puu pvc pvd pve pvo pvp pvr pvu pvv rcc rcd rce rco rcp rcr rcu rcv rdc rdd rde rdo rdp rdr rdu rdv re- rec red ree reo rep rer reu rev roc rod roe roo rop ror rou rov rpc rpd rpe rpo rpp rpr rpu rpv rrc rrd rrp rrr rru ruc rud rue ruo rup rur ruu ruv rvc rvd rve rvo rvp rvr rvu rvv ucc ucd uce uco ucp ucr ucu ucv udc udd ude udo udp udr udu udv uec ued uee uep uer uoc uod uoe uoo uop uor up- upc upd upe upo upp upr upu upv ur- urc urd ure uro urp urr uru uuc uue uur uuu uvc uve uvo uvu uvv v-e vcc vcd vce vco vcp vcr vcu vdc vdd vde vdo vdp vdr vdu vdv vec ved vee veo vep ver veu voc vod voe voo vop vor vou vov vpc vpd vpe vpo vpp vpr vpu vrc vrd vre vrp vrr vru vue vup vur vuv vvc vvo vvr vvv