a-a aaa aad aam aan aap ad- ada add adm adn adp ama amd amm amn amp an- ana and anm ann anp ap- apa apd apm apn app daa dad dam dan dap dda ddd ddm ddn ddp dma dmd dmm dmn dmp dna dnd dnm dnn dnp dpa dpd dpm dpn dpp maa mad mam man map mda mdd mdm mdn mdp mma mmd mmm mmn mmp mna mnm mnn mnp mpa mpd mpm mpn mpp naa nad nam nan nap nda ndd ndm ndn ndp nma nmd nmm nmn nmp nna nnm nnn nnp npa npd npm npn npp p-p paa pad pam pan pap pda pdd pdm pdn pdp pma pmd pmm pmn pmp pn- pna pnd pnm pnn pnp ppa ppd ppm ppn ppp