a-a aaa aad aak aan aao aap aar aas ad- ada add adk adn ado adp adr ads aka akd akk akn ako akp akr aks an- ana and ank ann ano anp anr ans aoa aod aok aon aoo aop aor aos ap- apa apd apk apn apo app apr aps ar- ara ard ark arn aro arp arr ars as- asa asd ask asn aso asp asr ass daa dad dak dan dao dap dar das dda ddd ddk ddn ddo ddp ddr dds dka dkk dko dkp dkr dks dna dnd dnk dnn dno dnp dnr dns doa dod dok don doo dop dor dos dpa dpd dpk dpn dpo dpp dpr dps dra drd drk drn dro drp drr drs dsa dsd dsk dsn dso dsp dsr dss ka- kaa kad kak kan kao kap kar kas kda kdk kdo kdp kdr kds kkk kkn kkp kkr kks kn- kna knd knk knn kno knp knr koa kod kok kon koo kop kor kos kpa kpd kpk kpn kpo kpp kpr kps kra krd krk krn kro krp krr krs ksa ksd ksk ksn kso ksp ksr kss naa nad nak nan nao nap nar nas nda ndd ndk ndn ndo ndp ndr nds nka nkk nkn nko nkp nkr nks nna nnk nnn nno nnp nns no- noa nod nok non noo nop nor nos npa npd npn npo npp npr nps nra nrd nrk nrn nro nrp nrr nrs nsa nsd nsk nsn nso nsp nsr nss oaa oad oak oan oao oap oar oas oda odd odn odo odp odr ods oka okd okk oko okp okr oks on- ona ond onk onn ono onp onr ons oo- ooa ood ook oon ooo oop oor oos op- opa opd opk opn opo opp opr ops or- ora ord ork orn oro orp orr ors os- osa osd osk osn oso osp osr oss p-p paa pad pak pan pao pap par pas pda pdd pdk pdn pdo pdp pdr pds pka pkd pkn pko pkp pkr pks pn- pna pnd pnk pnn pno pnp pnr pns poa pod pok pon poo pop por pos ppa ppd ppk ppn ppo ppp ppr pps pra prd prk prn pro prp prr prs ps- psa psd psk psn pso psp psr pss ra- raa rad rak ran rao rap rar ras rda rdd rdn rdo rdp rdr rds rkk rko rkp rks rna rnd rnn rno rnp rnr rns roa rod rok ron roo rop ror ros rpa rpd rpk rpn rpo rpp rpr rps rra rrd rrk rrn rrp rrr rrs rsa rsd rsk rsn rso rsp rsr rss saa sad sak san sao sap sar sas sda sdd sdk sdn sdo sdp sdr sds sk- ska skd skk sko skp skr sks sna snd snk snn sno snp snr sns soa sod sok son soo sop sor sos spa spd spk spn spo spp spr sps sr- sra srd srk srn sro srp srr srs ss- ssa ssd ssk ssn sso ssp ssr sss