-er a-a a-t aaa aae aak aao aap aar aat aea aee aek aeo aep aer aet aka ake akk ako akp akr aoa aoe aok aoo aop aor aot ap- apa ape apk apo app apr apt ar- ara are ark aro arp arr art at- ata ate ato atp atr att eaa eae eak eao eap ear eat eea eee eek eeo eep eer eet eka eke eko ekp ekr ekt eo- eoa eoe eok eoo eop eor eot ep- epa epe epo epp epr ept era ere erk ero erp err ert eta ete etk eto etp etr ett k-t ka- kaa kae kak kao kap kar kat ke- kea kee kek keo kep ker ket kke kkk kkp kkr kkt koa koe kok koo kop kor kot kpa kpe kpk kpo kpp kpr kpt kra krk kro krp krr krt kta kte ktk kto ktp ktr ktt oaa oae oak oao oap oar oat oea oee oeo oep oer oet oka oke okk oko okp okr oo- ooa ook ooo oop oor oot op- opa ope opk opo opp opr opt or- ora ore ork oro orp orr ort ot- ota ote otk oto otp otr ott p-p paa pae pak pao pap par pat pea pee pek peo pep per pet pka pke pko pkp pkr pkt poa poe pok poo pop por pot ppa ppe ppk ppo ppp ppr ppt pra pre prk pro prp prr prt pt- pta pte ptk pto ptp ptr ptt ra- raa rae rak rao rap rar rat re- rea ree rek reo rep rer ret rke rkk rko rkp rkt roa roe rok roo rop ror rot rpa rpe rpk rpo rpp rpr rpt rra rrk rrp rrr rrt rta rte rtk rto rtp rtr rtt taa tae tak tao tap tar tat te- tea tee tek teo tep ter tet tka tke tkk tko tkp tkr tkt to- toa toe tok too top tor tot tpa tpe tpk tpo tpp tpr tpt tra tre trk tro trp trr trt tta tte ttk tto ttp ttr ttt