m-r mmm mmp mmr mms mpm mpp mpr mps mrm mrp mrr mrs mry msm msp msr mss msy my- mym myr mys p-p pmm pmp pmr pms ppm ppp ppr pps prm prp prr prs pry ps- psm psp psr pss psy py- pym pyr pys rmm rmp rmr rms rpm rpp rpr rps rrm rrp rrr rrs rsm rsp rsr rss ry- rym ryr rys ryy smm smp smr sms smy spm spp spr sps spy sr- srm srp srr srs sry ss- ssm ssp ssr sss sy- sym syp syr sys ymm yms yps yrp yrs ysm ysp ysr yss ysy yys yyy