ddd ddm ddo ddp dds ddy dmd dmm dmo dmp dms dod dom doo dop dos doy dpd dpm dpo dpp dps dsd dsm dso dsp dss dsy dy- dyd dym dyo dyp dys dyy m-o mdd mdm mdo mdp mds mdy mmd mmm mmo mmp mms mod mom moo mop mos moy mpd mpm mpo mpp mps msd msm mso msp mss msy my- myd mym myo mys odd odm odo odp ods om- omd omm omo omp oms omy oo- ood oom ooo oop oos op- opd opm opo opp ops opy os- osd osm oso osp oss oyd oyo oys p-p pdd pdm pdo pdp pds pmd pmm pmo pmp pms pod pom poo pop pos poy ppd ppm ppo ppp pps ps- psd psm pso psp pss psy py- pyd pym pyo pys sdd sdm sdo sdp sds sdy smd smm smo smp sms smy sod som soo sop sos soy spd spm spo spp sps spy ss- ssd ssm sso ssp sss sy- syd sym syp sys ydo yds ydy ymm ymo yms yod yom yoo yop yos yoy ypd ypo yps ysm yso ysp yss ysy yys yyy