-er -up c-- ccc ccd cce cck ccn cco ccp ccr ccu cdc cdd cde cdk cdn cdo cdp cdr cdu ce- cec ced cee cek cen ceo cep cer ceu ckc ckd cko cn- cnc cnd cne cnn cno cnp cnr cnu co- coc cod coe cok con coo cop cor cou cpc cpd cpe cpk cpn cpo cpp cpr cpu crc crd cre crk crn cro crp crr cru cuc cud cue cuk cun cuo cup cur cuu dcc dcd dce dck dcn dco dcp dcr dcu ddc ddd dde ddk ddn ddo ddp ddr ddu de- dec ded dee dek den deo dep der deu dkc dke dkk dko dkp dkr dku dnc dnd dne dnk dnn dno dnp dnr doc dod doe dok don doo dop dor dou dpc dpd dpe dpk dpn dpo dpp dpr dpu drc drd dre drk drn dro drp drr dru duc dud due duk dun duo dup dur ec- ecc ecd ece eck ecn eco ecr ecu ed- edc edd ede edk edn edo edp edr edu eec eed eee eek een eeo eep eer ekc ekd eke eko ekp ekr eku en- enc end ene enk enn eno enp enr enu eo- eoc eod eoe eok eon eoo eop eor eou ep- epc epd epe epn epo epp epr epu erc erd ere erk ern ero erp err eru eu- euc eud eue eun eup eur kcc kcd kce kck kcn kcp kcr kcu kdc kde kdk kdo kdp kdr kdu ke- kec ked kee kek ken keo kep ker kkc kke kkk kkn kkp kkr kku kn- knc knd kne knk knn kno knp knr knu koc kod koe kok kon koo kop kor kou kpc kpd kpe kpk kpn kpo kpp kpr kpu krc krd krk krn kro krp krr kru kuc kud kue kuk kun kup kur kuu ncc ncd nce nck ncn nco ncp ncr ncu ndc ndd nde ndk ndn ndo ndp ndr ndu ne- nec ned nee nek nen neo nep ner neu nkc nke nkk nkn nko nkp nkr nku nnc nne nnk nnn nno nnp nnu no- noc nod noe nok non noo nop nor nou npc npd npe npn npo npp npr npu nrc nrd nre nrk nrn nro nrp nrr nru nuc nud nue nuk nun nuo nup nur nuu oc- occ ocd ock ocn oco ocp ocr ocu odc odd ode odn odo odp odr odu oec oed oee oen oeo oep oer okc okd oke okk oko okp okr oku on- onc ond one onk onn ono onp onr onu oo- ooc ood ook oon ooo oop oor op- opc opd ope opk opn opo opp opr or- orc ord ore ork orn oro orp orr oru ou- ouc oud oue ouk oun ouo oup our p-p pcc pcd pce pck pcn pco pcp pcr pcu pdc pdd pde pdk pdn pdo pdp pdr pdu pec ped pee pek pen peo pep per peu pkc pkd pke pkn pko pkp pkr pku pn- pnc pnd pne pnk pnn pno pnp pnr pnu poc pod poe pok pon poo pop por pou ppc ppd ppe ppk ppn ppo ppp ppr ppu prc prd pre prk prn pro prp prr pru puc pud pue puk pun pup pur puu rcc rcd rce rcn rco rcp rcr rcu rdc rdd rde rdn rdo rdp rdr rdu re- rec red ree rek ren reo rep rer reu rkc rke rkk rko rkp rku rnc rnd rnn rno rnp rnr rnu roc rod roe rok ron roo rop ror rou rpc rpd rpe rpk rpn rpo rpp rpr rpu rrc rrd rrk rrn rrp rrr rru ruc rud rue ruk run ruo rup rur ruu ucc ucd uce uck ucn uco ucp ucr ucu udc udd ude udk udn udo udp udr udu uec ued uee uen uep uer ukc uke ukk ukn ukp ukr uku un- unc und une unk unn uno unp unr unu uoc uod uoe uok uon uoo uop uor up- upc upd upe upk upn upo upp upr upu ur- urc urd ure urk urn uro urp urr uru uuc uue uun uur uuu