-er eee eek eem eeo eep eer eet eie eii eik eim eio eip eir eit eke eki eko ekp ekr ekt em- eme emi emk emm emo emp emr emt eo- eoe eoi eok eom eoo eop eor eot ep- epe epi epm epo epp epr ept ere eri erk erm ero erp err ert ete eti etk etm eto etp etr ett ie- iee iei iek iem iep ier iet iie iii iim iio iip iir iit ike iki ikk iko ikr ikt im- ime imi imm imo imp imt io- ioe ioi iom ioo iop ior iot ipe ipi ipm ipo ipp ipr ipt ir- ire iri irk irm iro irp irr irt ite iti itk itm ito itp itt k-t ke- kee kei kek kem keo kep ker ket kie kii kik kim kio kip kir kit kke kki kkk kkm kkp kkr kkt kme kmi kmk kmm kmo kmp kmt koe koi kok kom koo kop kor kot kpe kpi kpk kpm kpo kpp kpr kpt kri krk kro krp krr krt kte ktk ktm kto ktp ktr ktt m-o m-r mee mei mek mem meo mep mer met mi- mie mii mik mim mio mip mir mit mke mkk mkm mko mkp mkr mkt mme mmi mmk mmm mmo mmp mmr mmt moe moi mok mom moo mop mor mot mpe mpi mpk mpm mpo mpp mpr mpt mre mri mrk mrm mro mrp mrr mrt mte mti mtk mtm mto mtp mtr mtt o-i oee oei oem oeo oep oer oet oie oii oik oim oio oip oir oit oke oki okk oko okp okr om- ome omi omm omo omp omr omt oo- ooi ook oom ooo oop oor oot op- ope opi opk opm opo opp opr opt or- ore ori ork orm oro orp orr ort ot- ote oti otk otm oto otp otr ott p-p pee pei pek pem peo pep per pet pie pii pik pim pio pip pir pit pke pki pkm pko pkp pkr pkt pme pmi pmk pmm pmo pmp pmr pmt poe poi pok pom poo pop por pot ppe ppi ppk ppm ppo ppp ppr ppt pre pri prk prm pro prp prr prt pt- pte pti ptk ptm pto ptp ptr ptt re- ree rei rek rem reo rep rer ret rie rii rik rim rio rip rir rit rke rkk rkm rko rkp rkt rme rmi rmm rmo rmp rmr rmt roe roi rok rom roo rop ror rot rpe rpi rpk rpm rpo rpp rpr rpt rri rrk rrm rrp rrr rrt rte rti rtk rtm rto rtp rtr rtt te- tee tei tek tem teo tep ter tet tie tii tik tim tio tip tir tit tke tkk tkm tko tkp tkr tkt tme tmi tmk tmm tmo tmp tmr tmt to- toe toi tok tom too top tor tot tpe tpi tpk tpm tpo tpp tpr tpt tre tri trk trm tro trp trr trt tte tti ttk ttm tto ttp ttr ttt