a-a aaa aad aam aan aao ad- ada add adm adn ado ama amd amm amn amo an- ana and anm ann ano aoa aod aom aon aoo daa dad dam dan dao dda ddd ddm ddn ddo dma dmd dmm dmn dmo dna dnd dnm dnn dno doa dod dom don doo m-o maa mad mam man mao mda mdd mdm mdn mdo mma mmd mmm mmn mmo mna mnm mnn mno moa mod mom mon moo naa nad nam nan nao nda ndd ndm ndn ndo nma nmd nmm nmn nmo nna nnm nnn nno no- noa nod nom non noo oaa oad oam oan oao oda odd odm odn odo om- oma omd omm omn omo on- ona ond onn ono oo- ooa ood oom oon ooo