sna snb snc sne snn snp snr sns snu sny spa spb spc spe sph spn spp spr sps spu spy sr- sra srb src sre srh srn srp srr srs sry ss- ssa ssb ssc sse ssh ssn ssp ssr sss ssu sua sub suc sue suh sun sup sur sus suu suy sy- sya syb syc sye syh syn syp syr sys syu ua- uaa uab uac uae uah uan uap uar uas uau uay uba ubb ubc ube ubh ubn ubp ubr ubs ubu uby uca ucb ucc uce uch ucn ucp ucr ucs ucu uea ueb uec uee ueh uen uep uer ues uey uha uhb uhc uhe uhh uhp uhr uhs uhu uhy un- una unb unc une unh unn unp unr uns unu uny up- upa upb upc upe uph upn upp upr ups upu ur- ura urb urc ure urn urp urr urs uru ury usa usb usc use ush usn usp usr uss usu uua uuc uue uun uur uus uuu uyc uys uyu yaa yab yac yae yah yan yap yar yas yau yay ybc ybe ybp ybr ybs yby yca ycc yce ych ycp ycs ycu ycy yea yeb yec yee yeh yen yep yer yes yey yha yhc yhe yhs yhu yna yne ynn ynp yns ynu yny ypa yps ypu yra yrc yre yrn yrp yrs yru ysa ysb ysc yse ysp ysr yss ysu ysy yua yue yuh yun yup yur yus yuu yuy yyb yyc yye yys yyu yyy