rod roe roh rom ron roo rop ror ros roy rpc rpd rpe rph rpm rpn rpo rpp rpr rps rrc rrd rrh rrm rrn rrp rrr rrs rsc rsd rse rsh rsm rsn rso rsp rsr rss ry- ryc ryd rye rym ryn ryo ryr rys ryy scc scd sce sch scm scn sco scp scr scs sdc sdd sde sdh sdm sdn sdo sdp sdr sds sdy se- sec sed see seh sem sen seo sep ser ses sey sh- shc shd she shh shm shn sho shp shr shs shy smc smd sme smh smm smn smo smp smr sms smy snc snd sne snm snn sno snp snr sns sny soc sod soe soh som son soo sop sor sos soy spc spd spe sph spm spn spo spp spr sps spy sr- src srd sre srh srm srn sro srp srr srs sry ss- ssc ssd sse ssh ssm ssn sso ssp ssr sss sy- syc syd sye syh sym syn syp syr sys ycc ycd yce ych yco ycp ycs ycy yde ydn ydo yds ydy yec yed yee yeh yem yen yeo yep yer yes yey yhc yhe yhs ymc yme ymm ymo yms ynd yne ynn ynp yns yny yoc yod yoe yom yon yoo yop yor yos yoy ypd ypo yps yrc yre yrn yro yrp yrs ysc yse ysm yso ysp ysr yss ysy yyc yye yys yyy