a-a aaa aad aak aan aap ad- ada add adk adn adp aka akd akk akn akp an- ana and ank ann anp ap- apa apd apk apn app daa dad dak dan dap dda ddd ddk ddn ddp dka dkk dkp dna dnd dnk dnn dnp dpa dpd dpk dpn dpp ka- kaa kad kak kan kap kda kdk kdp kkk kkn kkp kn- kna knd knk knn knp kpa kpd kpk kpn kpp naa nad nak nan nap nda ndd ndk ndn ndp nka nkk nkn nkp nna nnk nnn nnp npa npd npn npp p-p paa pad pak pan pap pda pdd pdk pdn pdp pka pkd pkn pkp pn- pna pnd pnk pnn pnp ppa ppd ppk ppn ppp