a-a aaa aad aak aan aao aap ad- ada add adk adn ado adp aka akd akk akn ako akp an- ana and ank ann ano anp aoa aod aok aon aoo aop ap- apa apd apk apn apo app daa dad dak dan dao dap dda ddd ddk ddn ddo ddp dka dkk dko dkp dna dnd dnk dnn dno dnp doa dod dok don doo dop dpa dpd dpk dpn dpo dpp ka- kaa kad kak kan kao kap kda kdk kdo kdp kkk kkn kkp kn- kna knd knk knn kno knp koa kod kok kon koo kop kpa kpd kpk kpn kpo kpp naa nad nak nan nao nap nda ndd ndk ndn ndo ndp nka nkk nkn nko nkp nna nnk nnn nno nnp no- noa nod nok non noo nop npa npd npn npo npp oaa oad oak oan oao oap oda odd odn odo odp oka okd okk oko okp on- ona ond onk onn ono onp oo- ooa ood ook oon ooo oop op- opa opd opk opn opo opp p-p paa pad pak pan pao pap pda pdd pdk pdn pdo pdp pka pkd pkn pko pkp pn- pna pnd pnk pnn pno pnp poa pod pok pon poo pop ppa ppd ppk ppn ppo ppp