a-a aaa aad aaf aan aao aap aar ad- ada add adf adn ado adp adr af- afa afd aff afn afo afp afr an- ana and anf ann ano anp anr aoa aod aof aon aoo aop aor ap- apa apd apf apn apo app apr ar- ara ard arf arn aro arp arr daa dad daf dan dao dap dar dda ddd ddf ddn ddo ddp ddr dfa dfd dff dfn dfo dfp dfr dna dnd dnf dnn dno dnp dnr doa dod dof don doo dop dor dpa dpd dpf dpn dpo dpp dpr dra drd drn dro drp drr faa fad faf fan fao fap far fda fdd fdf fdn fdo fdp fdr ffa ffd fff ffn ffo ffp ffr fna fnd fnf fnn fnp fnr foa fof fon foo fop for fpa fpd fpn fpo fpp fpr fra frd frf frn fro frp frr naa nad naf nan nao nap nar nda ndd ndf ndn ndo ndp ndr nfa nfd nff nfn nfo nfp nfr nna nnf nnn nno nnp no- noa nod nof non noo nop nor npa npd npf npn npo npp npr nra nrd nrf nrn nro nrp nrr oaa oad oaf oan oao oap oar oda odd odf odn odo odp odr of- ofa ofd off ofn ofo ofp ofr on- ona ond onf onn ono onp onr oo- ooa ood oof oon ooo oop oor op- opa opd opf opn opo opp opr or- ora ord orf orn oro orp orr p-p paa pad paf pan pao pap par pda pdd pdf pdn pdo pdp pdr pfa pfd pff pfn pfo pfp pfr pn- pna pnd pnf pnn pno pnp pnr poa pod pof pon poo pop por ppa ppd ppf ppn ppo ppp ppr pra prd prf prn pro prp prr ra- raa rad raf ran rao rap rar rda rdd rdf rdn rdo rdp rdr rfa rfd rff rfn rfo rfp rfr rna rnd rnn rno rnp rnr roa rod rof ron roo rop ror rpa rpd rpf rpn rpo rpp rpr rra rrd rrf rrn rrp rrr