a-a aaa aad aam aan aao aap ad- ada add adm adn ado adp ama amd amm amn amo amp an- ana and anm ann ano anp aoa aod aom aon aoo aop ap- apa apd apm apn apo app daa dad dam dan dao dap dda ddd ddm ddn ddo ddp dma dmd dmm dmn dmo dmp dna dnd dnm dnn dno dnp doa dod dom don doo dop dpa dpd dpm dpn dpo dpp m-o maa mad mam man mao map mda mdd mdm mdn mdo mdp mma mmd mmm mmn mmo mmp mna mnm mnn mno mnp moa mod mom mon moo mop mpa mpd mpm mpn mpo mpp naa nad nam nan nao nap nda ndd ndm ndn ndo ndp nma nmd nmm nmn nmo nmp nna nnm nnn nno nnp no- noa nod nom non noo nop npa npd npm npn npo npp oaa oad oam oan oao oap oda odd odm odn odo odp om- oma omd omm omn omo omp on- ona ond onn ono onp oo- ooa ood oom oon ooo oop op- opa opd opm opn opo opp p-p paa pad pam pan pao pap pda pdd pdm pdn pdo pdp pma pmd pmm pmn pmo pmp pn- pna pnd pnm pnn pno pnp poa pod pom pon poo pop ppa ppd ppm ppn ppo ppp