a-a aaa aad aan aao aap aar ad- ada add adn ado adp adr an- ana and ann ano anp anr aoa aod aon aoo aop aor ap- apa apd apn apo app apr ar- ara ard arn aro arp arr daa dad dan dao dap dar dda ddd ddn ddo ddp ddr dna dnd dnn dno dnp dnr doa dod don doo dop dor dpa dpd dpn dpo dpp dpr dra drd drn dro drp drr naa nad nan nao nap nar nda ndd ndn ndo ndp ndr nna nnn nno nnp no- noa nod non noo nop nor npa npd npn npo npp npr nra nrd nrn nro nrp nrr oaa oad oan oao oap oar oda odd odn odo odp odr on- ona ond onn ono onp onr oo- ooa ood oon ooo oop oor op- opa opd opn opo opp opr or- ora ord orn oro orp orr p-p paa pad pan pao pap par pda pdd pdn pdo pdp pdr pn- pna pnd pnn pno pnp pnr poa pod pon poo pop por ppa ppd ppn ppo ppp ppr pra prd prn pro prp prr ra- raa rad ran rao rap rar rda rdd rdn rdo rdp rdr rna rnd rnn rno rnp rnr roa rod ron roo rop ror rpa rpd rpn rpo rpp rpr rra rrd rrn rrp rrr