a-a aaa aad aan aao aap aar aas ad- ada add adn ado adp adr ads an- ana and ann ano anp anr ans aoa aod aon aoo aop aor aos ap- apa apd apn apo app apr aps ar- ara ard arn aro arp arr ars as- asa asd asn aso asp asr ass daa dad dan dao dap dar das dda ddd ddn ddo ddp ddr dds dna dnd dnn dno dnp dnr dns doa dod don doo dop dor dos dpa dpd dpn dpo dpp dpr dps dra drd drn dro drp drr drs dsa dsd dsn dso dsp dsr dss naa nad nan nao nap nar nas nda ndd ndn ndo ndp ndr nds nna nnn nno nnp nns no- noa nod non noo nop nor nos npa npd npn npo npp npr nps nra nrd nrn nro nrp nrr nrs nsa nsd nsn nso nsp nsr nss oaa oad oan oao oap oar oas oda odd odn odo odp odr ods on- ona ond onn ono onp onr ons oo- ooa ood oon ooo oop oor oos op- opa opd opn opo opp opr ops or- ora ord orn oro orp orr ors os- osa osd osn oso osp osr oss p-p paa pad pan pao pap par pas pda pdd pdn pdo pdp pdr pds pn- pna pnd pnn pno pnp pnr pns poa pod pon poo pop por pos ppa ppd ppn ppo ppp ppr pps pra prd prn pro prp prr prs ps- psa psd psn pso psp psr pss ra- raa rad ran rao rap rar ras rda rdd rdn rdo rdp rdr rds rna rnd rnn rno rnp rnr rns roa rod ron roo rop ror ros rpa rpd rpn rpo rpp rpr rps rra rrd rrn rrp rrr rrs rsa rsd rsn rso rsp rsr rss saa sad san sao sap sar sas sda sdd sdn sdo sdp sdr sds sna snd snn sno snp snr sns soa sod son soo sop sor sos spa spd spn spo spp spr sps sr- sra srd srn sro srp srr srs ss- ssa ssd ssn sso ssp ssr sss