sr- sra srb src srh srl srm srn srr srs sry ss- ssa ssb ssc ssh ssl ssm ssn ssr sss ssu sua sub suc suh sul sum sun sur sus suu suy sy- sya syb syc syh syl sym syn syr sys syu ua- uaa uab uac uah ual uam uan uar uas uau uay uba ubb ubc ubh ubl ubn ubr ubs ubu uby uca ucb ucc uch ucl ucm ucn ucr ucs ucu uha uhb uhc uhh uhl uhm uhr uhs uhu uhy ula ulb ulc ull ulm uln ulr uls ulu uly um- uma umb umc umh uml umm umn umr ums umu un- una unb unc unh unl unm unn unr uns unu uny ur- ura urb urc url urm urn urr urs uru ury usa usb usc ush usl usm usn usr uss usu uua uuc uum uun uur uus uuu uyc uys uyu yaa yab yac yah yal yam yan yar yas yau yay ybc ybl ybm ybr ybs yby yca ycc ych ycl ycs ycu ycy yha yhc yhs yhu ylc yll ylm ylr yls yly yma ymc yml ymm yms yna ynn yns ynu yny yra yrc yrn yrs yru ysa ysb ysc ysl ysm ysr yss ysu ysy yua yuh yul yum yun yur yus yuu yuy yyb yyc yys yyu yyy