m-o m-r mmm mmo mmr mms mom moo mor mos moy mrm mro mrr mrs mry msm mso msr mss msy my- mym myo myr mys om- omm omo omr oms omy oo- oom ooo oor oos or- orm oro orr ors ory os- osm oso osr oss oyo oys rmm rmo rmr rms rom roo ror ros roy rrm rrr rrs rsm rso rsr rss ry- rym ryo ryr rys ryy smm smo smr sms smy som soo sor sos soy sr- srm sro srr srs sry ss- ssm sso ssr sss sy- sym syr sys ymm ymo yms yom yoo yor yos yoy yro yrs ysm yso ysr yss ysy yys yyy