a-a aaa aad aaf aak aan aao aap aar ad- ada add adf adk adn ado adp adr af- afa afd aff afk afn afo afp afr aka akd akk akn ako akp akr an- ana and anf ank ann ano anp anr aoa aod aof aok aon aoo aop aor ap- apa apd apf apk apn apo app apr ar- ara ard arf ark arn aro arp arr daa dad daf dak dan dao dap dar dda ddd ddf ddk ddn ddo ddp ddr dfa dfd dff dfk dfn dfo dfp dfr dka dkk dko dkp dkr dna dnd dnf dnk dnn dno dnp dnr doa dod dof dok don doo dop dor dpa dpd dpf dpk dpn dpo dpp dpr dra drd drk drn dro drp drr faa fad faf fak fan fao fap far fda fdd fdf fdk fdn fdo fdp fdr ffa ffd fff ffk ffn ffo ffp ffr fka fkf fkk fkp fna fnd fnf fnk fnn fnp fnr foa fof fok fon foo fop for fpa fpd fpk fpn fpo fpp fpr fra frd frf frk frn fro frp frr ka- kaa kad kaf kak kan kao kap kar kda kdf kdk kdo kdp kdr kfa kfd kff kfo kkk kkn kkp kkr kn- kna knd knf knk knn kno knp knr koa kod kof kok kon koo kop kor kpa kpd kpf kpk kpn kpo kpp kpr kra krd krf krk krn kro krp krr naa nad naf nak nan nao nap nar nda ndd ndf ndk ndn ndo ndp ndr nfa nfd nff nfk nfn nfo nfp nfr nka nkf nkk nkn nko nkp nkr nna nnf nnk nnn nno nnp no- noa nod nof nok non noo nop nor npa npd npf npn npo npp npr nra nrd nrf nrk nrn nro nrp nrr oaa oad oaf oak oan oao oap oar oda odd odf odn odo odp odr of- ofa ofd off ofn ofo ofp ofr oka okd okk oko okp okr on- ona ond onf onk onn ono onp onr oo- ooa ood oof ook oon ooo oop oor op- opa opd opf opk opn opo opp opr or- ora ord orf ork orn oro orp orr p-p paa pad paf pak pan pao pap par pda pdd pdf pdk pdn pdo pdp pdr pfa pfd pff pfk pfn pfo pfp pfr pka pkd pkf pkn pko pkp pkr pn- pna pnd pnf pnk pnn pno pnp pnr poa pod pof pok pon poo pop por ppa ppd ppf ppk ppn ppo ppp ppr pra prd prf prk prn pro prp prr ra- raa rad raf rak ran rao rap rar rda rdd rdf rdn rdo rdp rdr rfa rfd rff rfk rfn rfo rfp rfr rkf rkk rko rkp rna rnd rnn rno rnp rnr roa rod rof rok ron roo rop ror rpa rpd rpf rpk rpn rpo rpp rpr rra rrd rrf rrk rrn rrp rrr