-er -up eee eek eep eer ees eet eie eii eik eip eir eis eit eiu eke eki ekp ekr eks ekt eku ep- epe epi epp epr eps ept epu ere eri erk erp err ers ert eru es- ese esi esk esp esr ess est esu ete eti etk etp etr ets ett etu eu- eue eui eup eur eus eut ie- iee iei iek iep ier ies iet iie iii iip iir iis iit iiu ike iki ikk ikr iks ikt iku ipe ipi ipp ipr ips ipt ipu ir- ire iri irk irp irr irs irt iru is- ise isi isk isp isr iss ist isu ite iti itk itp its itt itu iu- iue iui iup iur ius iut k-t ke- kee kei kek kep ker kes ket kie kii kik kip kir kis kit kiu kke kki kkk kkp kkr kks kkt kku kpe kpi kpk kpp kpr kps kpt kpu kri krk krp krr krs krt kru kse ksi ksk ksp ksr kss kst ksu kte ktk ktp ktr kts ktt ktu kue kui kuk kup kur kus kut kuu p-p pee pei pek pep per pes pet peu pie pii pik pip pir pis pit piu pke pki pkp pkr pks pkt pku ppe ppi ppk ppp ppr pps ppt ppu pre pri prk prp prr prs prt pru ps- pse psi psk psp psr pss pst psu pt- pte pti ptk ptp ptr pts ptt ptu pue pui puk pup pur pus put puu re- ree rei rek rep rer res ret reu rie rii rik rip rir ris rit rke rkk rkp rks rkt rku rpe rpi rpk rpp rpr rps rpt rpu rri rrk rrp rrr rrs rrt rru rse rsi rsk rsp rsr rss rst rsu rte rti rtk rtp rtr rts rtt rtu rue rui ruk rup rur rus rut ruu se- see sei sek sep ser ses set seu sie sii sik sip sir sis sit siu sk- ske ski skk skp skr sks skt sku spe spi spk spp spr sps spt spu sr- sre sri srk srp srr srs srt ss- sse ssi ssk ssp ssr sss sst ssu ste sti stk stp str sts stt stu sue sui suk sup sur sus sut suu te- tee tei tek tep ter tes tet teu tie tii tik tip tir tis tit tiu tke tkk tkp tkr tks tkt tpe tpi tpk tpp tpr tps tpt tpu tre tri trk trp trr trs trt tru tse tsi tsk tsp tsr tss tst tsu tte tti ttk ttp ttr tts ttt ttu tue tui tuk tup tur tus tut tuu uee uei uep uer ues uet uie uii uip uir uis uit uiu uke uki ukk ukp ukr uku up- upe upi upk upp upr ups upt upu ur- ure uri urk urp urr urs urt uru use usi usk usp usr uss ust usu ute uti utk utp utr uts utt utu uue uur uus uut uuu