spu spy sr- src srd sre sri srl sro srp srr srs sry ss- ssc ssd sse ssi ssl sso ssp ssr sss ssu suc sud sue sui sul suo sup sur sus suu suy sy- syc syd sye syi syl syp syr sys syu ucc ucd uce uci ucl uco ucp ucr ucs ucu udc udd ude udi udl udo udp udr uds udu uec ued uee uei uel uep uer ues uey uic uid uie uii uil uio uip uir uis uiu ulc uld ule uli ull ulo ulp ulr uls ulu uly uoc uod uoe uol uoo uop uor uos up- upc upd upe upi upo upp upr ups upu ur- urc urd ure uri url uro urp urr urs uru ury usc usd use usi usl uso usp usr uss usu uuc uue uur uus uuu uyc uyi uyo uys uyu ycc ycd yce yci ycl yco ycp ycs ycu ycy yde ydl ydo yds ydy yec yed yee yei yel yeo yep yer yes yey yid yie yii yio yip yir yis ylc yld yle yli yll ylr yls yly yoc yod yoe yoi yol yoo yop yor yos you yoy ypd ypl ypo yps ypu yrc yre yro yrp yrs yru ysc yse ysi ysl yso ysp ysr yss ysu ysy yud yue yui yul yuo yup yur yus yuu yuy yyc yye yys yyu yyy