-er -up eee eek eem een eep eer eke ekp ekr eku em- eme emk emm emn emp emr emu en- ene enk enm enn enp enr enu ep- epe epm epn epp epr epu ere erk erm ern erp err eru eu- eue eun eup eur ke- kee kek kem ken kep ker kke kkk kkm kkn kkp kkr kku kme kmk kmm kmp kmu kn- kne knk knm knn knp knr knu kpe kpk kpm kpn kpp kpr kpu krk krn krp krr kru kue kuk kum kun kup kur kuu m-r mee mek mem men mep mer meu mke mkk mkm mkn mkp mkr mku mme mmk mmm mmn mmp mmr mmu mne mnk mnm mnn mnp mnr mnu mpe mpk mpm mpn mpp mpr mpu mre mrk mrm mrn mrp mrr mru mue muk mum mun mup mur muu ne- nee nek nem nen nep ner neu nke nkk nkm nkn nkp nkr nku nme nmk nmm nmn nmp nmr nmu nne nnk nnm nnn nnp nnu npe npm npn npp npr npu nre nrk nrm nrn nrp nrr nru nue nuk num nun nup nur nuu p-p pee pek pem pen pep per peu pke pkm pkn pkp pkr pku pme pmk pmm pmn pmp pmr pmu pn- pne pnk pnm pnn pnp pnr pnu ppe ppk ppm ppn ppp ppr ppu pre prk prm prn prp prr pru pue puk pum pun pup pur puu re- ree rek rem ren rep rer reu rke rkk rkm rkp rku rme rmm rmn rmp rmr rnm rnn rnp rnr rnu rpe rpk rpm rpn rpp rpr rpu rrk rrm rrn rrp rrr rru rue ruk rum run rup rur ruu uee uem uen uep uer uke ukk ukn ukp ukr uku um- ume umm umn ump umr umu un- une unk unm unn unp unr unu up- upe upk upm upn upp upr upu ur- ure urk urm urn urp urr uru uue uum uun uur uuu