-er -up c-- ccc cce ccn ccp ccr cct ccu ce- cec cee cen cep cer cet ceu cn- cnc cne cnn cnp cnr cnt cnu cpc cpe cpn cpp cpr cpt cpu crc cre crn crp crr crt cru ctc cte ctn ctp ctr ctt ctu cuc cue cun cup cur cut cuu ec- ecc ece ecn ecr ect ecu eec eee een eep eer eet en- enc ene enn enp enr ent enu ep- epc epe epn epp epr ept epu erc ere ern erp err ert eru etc ete etn etp etr ett etu eu- euc eue eun eup eur eut ncc nce ncn ncp ncr nct ncu ne- nec nee nen nep ner net neu nnc nne nnn nnp nnt nnu npc npe npn npp npr npt npu nrc nre nrn nrp nrr nrt nru ntc nte ntn ntp ntr ntt ntu nuc nue nun nup nur nut nuu p-p pcc pce pcn pcp pcr pct pcu pec pee pen pep per pet peu pn- pnc pne pnn pnp pnr pnt pnu ppc ppe ppn ppp ppr ppt ppu prc pre prn prp prr prt pru pt- ptc pte ptn ptp ptr ptt ptu puc pue pun pup pur put puu rcc rce rcn rcp rcr rct rcu re- rec ree ren rep rer ret reu rnc rnn rnp rnr rnt rnu rpc rpe rpn rpp rpr rpt rpu rrc rrn rrp rrr rrt rru rtc rte rtn rtp rtr rtt rtu ruc rue run rup rur rut ruu tcc tce tcn tcp tcr tct tcu te- tec tee ten tep ter tet teu tnc tne tnn tnp tnr tnt tpc tpe tpn tpp tpr tpt tpu trc tre trn trp trr trt tru ttc tte ttn ttp ttr ttt ttu tuc tue tun tup tur tut tuu ucc uce ucn ucp ucr uct ucu uec uee uen uep uer uet un- unc une unn unp unr unt unu up- upc upe upn upp upr upt upu ur- urc ure urn urp urr urt uru utc ute utn utp utr utt utu uuc uue uun uur uut uuu