-er -ey eee eek eeo eep eer eet eey eie eii eik eio eip eir eit eke eki eko ekp ekr ekt eky eo- eoe eoi eok eoo eop eor eot ep- epe epi epo epp epr ept ere eri erk ero erp err ert ery ete eti etk eto etp etr ett ety eye eyo eyp eyr eyt ie- iee iei iek iep ier iet iey iie iii iio iip iir iit ike iki ikk iko ikr ikt io- ioe ioi ioo iop ior iot ipe ipi ipo ipp ipr ipt ipy ir- ire iri irk iro irp irr irt iry ite iti itk ito itp itt ity iye iyo iyr iyt iyy k-t ke- kee kei kek keo kep ker ket key kie kii kik kio kip kir kit kke kki kkk kkp kkr kkt kky koe koi kok koo kop kor kot koy kpe kpi kpk kpo kpp kpr kpt kri krk kro krp krr krt kry kte ktk kto ktp ktr ktt kye kyo kyp kyr kyt o-i oee oei oeo oep oer oet oey oie oii oik oio oip oir oit oke oki okk oko okp okr oo- ooi ook ooo oop oor oot op- ope opi opk opo opp opr opt opy or- ore ori ork oro orp orr ort ory ot- ote oti otk oto otp otr ott oye oyi oyo p-p pee pei pek peo pep per pet pey pie pii pik pio pip pir pit pke pki pko pkp pkr pkt pky poe poi pok poo pop por pot poy ppe ppi ppk ppo ppp ppr ppt pre pri prk pro prp prr prt pry pt- pte pti ptk pto ptp ptr ptt pty py- pye pyk pyo pyr pyt re- ree rei rek reo rep rer ret rey rie rii rik rio rip rir rit riy rke rkk rko rkp rkt rky roe roi rok roo rop ror rot roy rpe rpi rpk rpo rpp rpr rpt rri rrk rrp rrr rrt rte rti rtk rto rtp rtr rtt rty ry- rye ryk ryo ryr ryy te- tee tei tek teo tep ter tet tey tie tii tik tio tip tir tit tiy tke tkk tko tkp tkr tkt tky to- toe toi tok too top tor tot toy tpe tpi tpk tpo tpp tpr tpt tre tri trk tro trp trr trt try tte tti ttk tto ttp ttr ttt tty tye tyo typ tyr tyt yee yei yek yeo yep yer yet yey yie yii yio yip yir yit yki ykk yoe yoi yok yoo yop yor yot yoy ypo yre yro yrp yrt yte ytk yto ytp ytr ytt yye yyt yyy