-er eee eek eem eep eer ees eet eie eii eik eim eip eir eis eit eke eki ekp ekr eks ekt em- eme emi emk emm emp emr ems emt ep- epe epi epm epp epr eps ept ere eri erk erm erp err ers ert es- ese esi esk esm esp esr ess est ete eti etk etm etp etr ets ett ie- iee iei iek iem iep ier ies iet iie iii iim iip iir iis iit ike iki ikk ikr iks ikt im- ime imi imm imp ims imt ipe ipi ipm ipp ipr ips ipt ir- ire iri irk irm irp irr irs irt is- ise isi isk ism isp isr iss ist ite iti itk itm itp its itt k-t ke- kee kei kek kem kep ker kes ket kie kii kik kim kip kir kis kit kke kki kkk kkm kkp kkr kks kkt kme kmi kmk kmm kmp kms kmt kpe kpi kpk kpm kpp kpr kps kpt kri krk krp krr krs krt kse ksi ksk ksm ksp ksr kss kst kte ktk ktm ktp ktr kts ktt m-r mee mei mek mem mep mer mes met mi- mie mii mik mim mip mir mis mit mke mkk mkm mkp mkr mks mkt mme mmi mmk mmm mmp mmr mms mmt mpe mpi mpk mpm mpp mpr mps mpt mre mri mrk mrm mrp mrr mrs mrt mse msi msk msm msp msr mss mst mte mti mtk mtm mtp mtr mts mtt p-p pee pei pek pem pep per pes pet pie pii pik pim pip pir pis pit pke pki pkm pkp pkr pks pkt pme pmi pmk pmm pmp pmr pms pmt ppe ppi ppk ppm ppp ppr pps ppt pre pri prk prm prp prr prs prt ps- pse psi psk psm psp psr pss pst pt- pte pti ptk ptm ptp ptr pts ptt re- ree rei rek rem rep rer res ret rie rii rik rim rip rir ris rit rke rkk rkm rkp rks rkt rme rmi rmm rmp rmr rms rmt rpe rpi rpk rpm rpp rpr rps rpt rri rrk rrm rrp rrr rrs rrt rse rsi rsk rsm rsp rsr rss rst rte rti rtk rtm rtp rtr rts rtt se- see sei sek sem sep ser ses set sie sii sik sim sip sir sis sit sk- ske ski skk skm skp skr sks skt sme smi smk smm smp smr sms smt spe spi spk spm spp spr sps spt sr- sre sri srk srm srp srr srs srt ss- sse ssi ssk ssm ssp ssr sss sst ste sti stk stm stp str sts stt te- tee tei tek tem tep ter tes tet tie tii tik tim tip tir tis tit tke tkk tkm tkp tkr tks tkt tme tmi tmk tmm tmp tmr tms tmt tpe tpi tpk tpm tpp tpr tps tpt tre tri trk trm trp trr trs trt tse tsi tsk tsm tsp tsr tss tst tte tti ttk ttm ttp ttr tts ttt