ddd ddk ddm ddo ddp dkk dkm dko dkp dmd dmk dmm dmo dmp dod dok dom doo dop dpd dpk dpm dpo dpp kdk kdm kdo kdp kkk kkm kkp kmd kmk kmm kmo kmp kod kok kom koo kop kpd kpk kpm kpo kpp m-o mdd mdk mdm mdo mdp mkd mkk mkm mko mkp mmd mmk mmm mmo mmp mod mok mom moo mop mpd mpk mpm mpo mpp odd odm odo odp okd okk oko okp om- omd omm omo omp oo- ood ook oom ooo oop op- opd opk opm opo opp p-p pdd pdk pdm pdo pdp pkd pkm pko pkp pmd pmk pmm pmo pmp pod pok pom poo pop ppd ppk ppm ppo ppp