src srg srh sri sro srr srs sry ss- ssa ssb ssc ssg ssh ssi sso ssr sss ssu sua sub suc sug suh sui suo sur sus suu suy sy- sya syb syc syg syh syi syr sys syu ua- uaa uab uac uag uah uai uao uar uas uau uay uba ubb ubc ubg ubh ubi ubo ubr ubs ubu uby uca ucb ucc ucg uch uci uco ucr ucs ucu uga ugb ugc ugg ugh ugi ugo ugr ugs ugu uha uhb uhc uhh uhi uho uhr uhs uhu uhy uia uib uic uig uii uio uir uis uiu uoa uob uoc uog uoo uor uos ur- ura urb urc urg uri uro urr urs uru ury usa usb usc usg ush usi uso usr uss usu uua uuc uug uur uus uuu uyc uyi uyo uys uyu yaa yab yac yag yah yai yao yar yas yau yay ybc ybg ybi ybr ybs yby yca ycc ych yci yco ycs ycu ycy yga ygc ygo yha yhc yhi yhs yhu yig yih yii yio yir yis yob yoc yog yoi yoo yor yos you yoy yra yrc yrg yro yrs yru ysa ysb ysc ysg ysi yso ysr yss ysu ysy yua yug yuh yui yuo yur yus yuu yuy yyb yyc yyg yys yyu yyy