-er -up eee eek eel eep eer ees eet eie eii eik eil eip eir eis eit eiu eke eki ekl ekp ekr eks ekt eku ele eli elk ell elp elr els elt elu ep- epe epi epl epp epr eps ept epu ere eri erk erl erp err ers ert eru es- ese esi esk esl esp esr ess est esu ete eti etk etl etp etr ets ett etu eu- eue eui eul eup eur eus eut ie- iee iei iek iel iep ier ies iet iie iii iil iip iir iis iit iiu ike iki ikk ikl ikr iks ikt iku il- ile ili ilk ill ilp ilr ils ilt ilu ipe ipi ipl ipp ipr ips ipt ipu ir- ire iri irk irl irp irr irs irt iru is- ise isi isk isl isp isr iss ist isu ite iti itk itl itp its itt itu iu- iue iui iup iur ius iut k-t ke- kee kei kek kel kep ker kes ket kie kii kik kil kip kir kis kit kiu kke kki kkk kkl kkp kkr kks kkt kku kl- kli klr kls klt klu kpe kpi kpk kpl kpp kpr kps kpt kpu kri krk krl krp krr krs krt kru kse ksi ksk ksl ksp ksr kss kst ksu kte ktk ktl ktp ktr kts ktt ktu kue kui kuk kul kup kur kus kut kuu l-p lee lei lek lel lep ler les let leu lie lii lik lil lip lir lis lit liu lkl lkp lkr lks lkt lle lli llk lll llp llr lls llt llu lpe lpi lpk lpl lpp lpr lps lpt lpu lri lrk lrp lrr lrs lrt lru lse lsi lsk lsl lsp lsr lss lst lsu lte lti ltk ltl ltp ltr lts ltt ltu lue lui luk lul lup lur lus lut luu p-p pee pei pek pel pep per pes pet peu pie pii pik pil pip pir pis pit piu pke pki pkl pkp pkr pks pkt pku ple pli plk pll plp plr pls plt plu ppe ppi ppk ppl ppp ppr pps ppt ppu pre pri prk prl prp prr prs prt pru ps- pse psi psk psl psp psr pss pst psu pt- pte pti ptk ptl ptp ptr pts ptt ptu pue pui puk pul pup pur pus put puu re- ree rei rek rel rep rer res ret reu rie rii rik ril rip rir ris rit rke rkk rkp rks rkt rku rle rli rll rlp rlr rls rlt rlu rpe rpi rpk rpl rpp rpr rps rpt rpu rri rrk rrl rrp rrr rrs rrt rru rse rsi rsk rsl rsp rsr rss rst rsu rte rti rtk rtl rtp rtr rts rtt rtu rue rui ruk rup rur rus rut ruu se- see sei sek sel sep ser ses set seu sie sii sik sil sip sir sis sit siu sk- ske ski skk skl skp skr sks skt sku sle sli slk sll slp slr sls slt slu spe spi spk spl spp spr sps spt spu sr- sre sri srk srl srp srr srs srt ss- sse ssi ssk ssl ssp ssr sss sst ssu ste sti stk stl stp str sts stt stu sue sui suk sul sup sur sus sut suu te- tee tei tek tel tep ter tes tet teu tie tii tik til tip tir tis tit tiu tke tkk tkl tkp tkr tks tkt tle tli tlk tll tlp tlr tls tlt tlu tpe tpi tpk tpl tpp tpr tps tpt tpu tre tri trk trl trp trr trs trt tru tse tsi tsk tsl tsp tsr tss tst tsu tte tti ttk ttl ttp ttr tts ttt ttu tue tui tuk tul tup tur tus tut tuu uee uei uel uep uer ues uet uie uii uil uip uir uis uit uiu uke uki ukk ukl ukp ukr uku ule uli ulk ull ulp ulr uls ult ulu up- upe upi upk upp upr ups upt upu ur- ure uri urk url urp urr urs urt uru use usi usk usl usp usr uss ust usu ute uti utk utl utp utr uts utt utu uue uur uus uut uuu