sor sos sou soy sr- sra srb src srh srl srn sro srr srs sry ss- ssa ssb ssc ssh ssl ssn sso ssr sss ssu sua sub suc suh sul sun suo sur sus suu suy sy- sya syb syc syh syl syn syr sys syu ua- uaa uab uac uah ual uan uao uar uas uau uay uba ubb ubc ubh ubl ubn ubo ubr ubs ubu uby uca ucb ucc uch ucl ucn uco ucr ucs ucu uha uhb uhc uhh uhl uho uhr uhs uhu uhy ula ulb ulc ull uln ulo ulr uls ulu uly un- una unb unc unh unl unn uno unr uns unu uny uoa uob uoc uol uon uoo uor uos ur- ura urb urc url urn uro urr urs uru ury usa usb usc ush usl usn uso usr uss usu uua uuc uun uur uus uuu uyc uyo uys uyu yaa yab yac yah yal yan yao yar yas yau yay ybc ybl ybr ybs yby yca ycc ych ycl yco ycs ycu ycy yha yhc yhs yhu ylc yll ylr yls yly yna ynn yns ynu yny yob yoc yol yon yoo yor yos you yoy yra yrc yrn yro yrs yru ysa ysb ysc ysl yso ysr yss ysu ysy yua yuh yul yun yuo yur yus yuu yuy yyb yyc yys yyu yyy