sspl ssps sssa sssb ssss suas sub- suba subb subg subl subs suee suel sues sueu sug- suga suge sugg sul- sula sule sull sulp sulu sup- supa supe supp sups sus- susa suse susp suss susu suus uaes uasa uasp uaua ubal ubba ubbe ubla uble ubls ueba uele uell uess ugab ugal ugep uggs uguu ulaa ulae ulas ulea uleb ulee ules ulla ulle ulsa ulua ulul ulus upal upas upbe upla uplb uppa uppe uppp uppu upsa upse upup us-a usaa usag usal usap usas usba usbe usbl usbs usea usee usel uses usga usgp usle uslp uslu uspa uspp usps ussa ussb usse usss ussu usua usul usus uulu uuuu