soos sosa soso soss souf soul sous ssaa ssab ssac ssao ssas ssau ssca sscc sscs ssfc ssfl ssla sslc ssoc sssa sssb sssc sssf ssss suas sub- suba subb subl subo subs suc- succ sucs suf- sufa sufc suff sufs sufu sul- sula sulc sulf sull sulo sulu suos sus- susa suso suss susu suus uabc uaca uafa uaoc uasa uaua ubac ubal ubba ubbo ubla ublo ubls uboc ubos ucal ucas ucbc ucca ucfa ucfb ucla ucos ucsa ucsb ucsc ucsf ucsu ucua ufcu uffa ufos ulaa ulas ulbc ulcc ulco ulla ullo ulo- uloc ulos ulsa ulua ulul ulus uocc uofa uofl uofo uolc us-a usaa usac usaf usal usas usba usbc usbl usbs usca uscc uscf usco uscs usfa usfc usfl usfs uslu usoc usos ussa ussb ussc ussf usss ussu usua usul usus uulu uuoc uuuu