-er a-a a-t aaa aae aaf aak aao aap aar aat aea aee aef aek aeo aep aer aet af- afa afe aff afk afo afp afr aft aka ake akk ako akp akr aoa aoe aof aok aoo aop aor aot ap- apa ape apf apk apo app apr apt ar- ara are arf ark aro arp arr art at- ata ate atf ato atp atr att eaa eae eaf eak eao eap ear eat eea eee eef eek eeo eep eer eet ef- efa efe eff efo efp efr eft eka eke ekf eko ekp ekr ekt eo- eoa eoe eof eok eoo eop eor eot ep- epa epe epf epo epp epr ept era ere erf erk ero erp err ert eta ete etf etk eto etp etr ett faa fae faf fak fao fap far fat fea fee fef fek feo fep fer fet ffa ffe fff ffk ffo ffp ffr fft fka fkf fkk fkp fkt foa foe fof fok foo fop for fot fpa fpe fpk fpo fpp fpr fpt fra fre frf frk fro frp frr frt fta fte ftf ftk fto ftp ftr ftt k-t ka- kaa kae kaf kak kao kap kar kat ke- kea kee kef kek keo kep ker ket kfa kff kfo kke kkk kkp kkr kkt koa koe kof kok koo kop kor kot kpa kpe kpf kpk kpo kpp kpr kpt kra krf krk kro krp krr krt kta kte ktf ktk kto ktp ktr ktt oaa oae oaf oak oao oap oar oat oea oee oef oeo oep oer oet of- ofa ofe off ofo ofp ofr oft oka oke okk oko okp okr oo- ooa oof ook ooo oop oor oot op- opa ope opf opk opo opp opr opt or- ora ore orf ork oro orp orr ort ot- ota ote otf otk oto otp otr ott p-p paa pae paf pak pao pap par pat pea pee pef pek peo pep per pet pfa pfe pff pfk pfo pfp pfr pft pka pke pkf pko pkp pkr pkt poa poe pof pok poo pop por pot ppa ppe ppf ppk ppo ppp ppr ppt pra pre prf prk pro prp prr prt pt- pta pte ptf ptk pto ptp ptr ptt ra- raa rae raf rak rao rap rar rat re- rea ree ref rek reo rep rer ret rfa rfe rff rfk rfo rfp rfr rft rke rkf rkk rko rkp rkt roa roe rof rok roo rop ror rot rpa rpe rpf rpk rpo rpp rpr rpt rra rrf rrk rrp rrr rrt rta rte rtf rtk rto rtp rtr rtt taa tae taf tak tao tap tar tat te- tea tee tef tek teo tep ter tet tfa tfe tff tfk tfo tfp tfr tft tka tke tkk tko tkp tkr tkt to- toa toe tof tok too top tor tot tpa tpe tpf tpk tpo tpp tpr tpt tra tre trf trk tro trp trr trt tta tte ttf ttk tto ttp ttr ttt