a-a aaa aad aam aan aao aax ad- ada add adm adn ado adx ama amd amm amn amo amx an- ana and anm ann ano anx aoa aod aom aon aoo aox ax- axa axm axn axo axx daa dad dam dan dao dax dda ddd ddm ddn ddo ddx dma dmd dmm dmn dmo dmx dna dnd dnm dnn dno doa dod dom don doo dox dxd dxn dxo dxx m-o maa mad mam man mao max mda mdd mdm mdn mdo mdx mma mmd mmm mmn mmo mmx mna mnm mnn mno moa mod mom mon moo mox mxa mxd mxn naa nad nam nan nao nax nda ndd ndm ndn ndo nma nmd nmm nmn nmo nna nnm nnn nno no- noa nod nom non noo nox nxd oaa oad oam oan oao oax oda odd odm odn odo om- oma omd omm omn omo omx on- ona ond onn ono onx oo- ooa ood oom oon ooo oox ox- oxa oxn oxo oxx xaa xad xam xan xda xdm xma xmd xmm xmo xmx xna xno xoa xod xom xon xoo xox xxo xxx