-er a-a aaa aae aag aak aan aao aap aar aea aee aeg aek aen aeo aep aer ag- aga age agg agk agn ago agp agr aka ake akg akk akn ako akp akr an- ana ane ang ank ann ano anp anr aoa aoe aog aok aon aoo aop aor ap- apa ape apg apk apn apo app apr ar- ara are arg ark arn aro arp arr eaa eae eag eak ean eao eap ear eea eee eeg eek een eeo eep eer ega ege egg egn ego egp egr eka eke ekg eko ekp ekr en- ena ene eng enk enn eno enp enr eo- eoa eoe eog eok eon eoo eop eor ep- epa epe epg epn epo epp epr era ere erg erk ern ero erp err g-p gaa gae gag gak gan gao gap gar ge- gea gee geg gek gen geo gep ger gga ggg ggn ggo ggp ggr gka gkn gko gkp gna gne gnn gno gnp gnr goa goe gog gok gon goo gop gor gpa gpe gpg gpk gpn gpo gpp gpr gra gre grg grk grn gro grp grr ka- kaa kae kag kak kan kao kap kar ke- kea kee keg kek ken keo kep ker kga kgo kgp kke kkk kkn kkp kkr kn- kna kne kng knk knn kno knp knr koa koe kog kok kon koo kop kor kpa kpe kpk kpn kpo kpp kpr kra krg krk krn kro krp krr naa nae nag nak nan nao nap nar ne- nea nee neg nek nen neo nep ner nga nge ngg ngk ngn ngo ngp nka nke nkk nkn nko nkp nkr nna nne nng nnk nnn nno nnp no- noa noe nog nok non noo nop nor npa npe npg npn npo npp npr nra nre nrg nrk nrn nro nrp nrr oaa oae oag oak oan oao oap oar oea oee oeg oen oeo oep oer oga oge ogg ogn ogo ogp oka oke okg okk oko okp okr on- ona one ong onk onn ono onp onr oo- ooa oog ook oon ooo oop oor op- opa ope opg opk opn opo opp opr or- ora ore org ork orn oro orp orr p-p paa pae pag pak pan pao pap par pea pee peg pek pen peo pep per pga pge pgg pgk pgn pgo pgp pgr pka pke pkg pkn pko pkp pkr pn- pna pne png pnk pnn pno pnp pnr poa poe pog pok pon poo pop por ppa ppe ppg ppk ppn ppo ppp ppr pra pre prg prk prn pro prp prr ra- raa rae rag rak ran rao rap rar re- rea ree reg rek ren reo rep rer rga rge rgg rgk rgn rgo rgp rgr rke rkg rkk rko rkp rna rng rnn rno rnp rnr roa roe rog rok ron roo rop ror rpa rpe rpg rpk rpn rpo rpp rpr rra rrg rrk rrn rrp rrr