-er eee eek eem een eeo eep eer eie eii eik eim ein eio eip eir eke eki eko ekp ekr em- eme emi emk emm emn emo emp emr en- ene eni enk enm enn eno enp enr eo- eoe eoi eok eom eon eoo eop eor ep- epe epi epm epn epo epp epr ere eri erk erm ern ero erp err ie- iee iei iek iem ien iep ier iie iii iim iin iio iip iir ike iki ikk iko ikr im- ime imi imm imn imo imp in- ine ini ink inm inn ino inp inr io- ioe ioi iom ion ioo iop ior ipe ipi ipm ipn ipo ipp ipr ir- ire iri irk irm irn iro irp irr ke- kee kei kek kem ken keo kep ker kie kii kik kim kin kio kip kir kke kki kkk kkm kkn kkp kkr kme kmi kmk kmm kmo kmp kn- kne kni knk knm knn kno knp knr koe koi kok kom kon koo kop kor kpe kpi kpk kpm kpn kpo kpp kpr kri krk krn kro krp krr m-o m-r mee mei mek mem men meo mep mer mi- mie mii mik mim min mio mip mir mke mkk mkm mkn mko mkp mkr mme mmi mmk mmm mmn mmo mmp mmr mne mni mnk mnm mnn mno mnp mnr moe moi mok mom mon moo mop mor mpe mpi mpk mpm mpn mpo mpp mpr mre mri mrk mrm mrn mro mrp mrr n-i ne- nee nei nek nem nen neo nep ner nie nii nik nim nin nio nip nir nke nki nkk nkm nkn nko nkp nkr nme nmi nmk nmm nmn nmo nmp nmr nne nni nnk nnm nnn nno nnp no- noe noi nok nom non noo nop nor npe npi npm npn npo npp npr nre nri nrk nrm nrn nro nrp nrr o-i oee oei oem oen oeo oep oer oie oii oik oim oin oio oip oir oke oki okk oko okp okr om- ome omi omm omn omo omp omr on- one oni onk onn ono onp onr oo- ooi ook oom oon ooo oop oor op- ope opi opk opm opn opo opp opr or- ore ori ork orm orn oro orp orr p-p pee pei pek pem pen peo pep per pie pii pik pim pin pio pip pir pke pki pkm pkn pko pkp pkr pme pmi pmk pmm pmn pmo pmp pmr pn- pne pni pnk pnm pnn pno pnp pnr poe poi pok pom pon poo pop por ppe ppi ppk ppm ppn ppo ppp ppr pre pri prk prm prn pro prp prr re- ree rei rek rem ren reo rep rer rie rii rik rim rin rio rip rir rke rkk rkm rko rkp rme rmi rmm rmn rmo rmp rmr rni rnm rnn rno rnp rnr roe roi rok rom ron roo rop ror rpe rpi rpk rpm rpn rpo rpp rpr rri rrk rrm rrn rrp rrr