a-a aaa aad aam aan aap aax ad- ada add adm adn adp adx ama amd amm amn amp amx an- ana and anm ann anp anx ap- apa apd apm apn app apx ax- axa axm axn axp axx daa dad dam dan dap dax dda ddd ddm ddn ddp ddx dma dmd dmm dmn dmp dmx dna dnd dnm dnn dnp dpa dpd dpm dpn dpp dxd dxn dxp dxx maa mad mam man map max mda mdd mdm mdn mdp mdx mma mmd mmm mmn mmp mmx mna mnm mnn mnp mpa mpd mpm mpn mpp mpx mxa mxd mxn mxp naa nad nam nan nap nax nda ndd ndm ndn ndp nma nmd nmm nmn nmp nna nnm nnn nnp npa npd npm npn npp nxd p-p paa pad pam pan pap pax pda pdd pdm pdn pdp pdx pma pmd pmm pmn pmp pmx pn- pna pnd pnm pnn pnp pnx ppa ppd ppm ppn ppp ppx pxm xaa xad xam xan xap xda xdm xma xmd xmm xmp xmx xna xpa xpd xpm xpn xpp xxp xxx