span spap spas spau spde spdp spea speb sped spee spen spes spne spns sppd spps spsa spsd spse spsp spss spud spue spun spus ssaa ssab ssan ssap ssas ssau ssbn ssdd ssdp ssee ssep sses ssns sspa sspe ssps sssa sssb ssss suan suas sub- suba subb subd subs suda sudd sude suds sued suee suen sues sueu sun- suna sunb sund sune sunn suns sunu sup- supa supe supp sups sus- susa susd suse susp suss susu suus uaes uasa uasd uasp uaua ubba ubbe ubud udaa udad udas udau udds udea uden udpd udsd udun ueba ueda uend uesn uess unaa unan unas unau unbd unbe unda unde unds uneb uned unee unen unes unna unne unns unpa unps uns- unsa unus upas upbe upda uped upen upne upnp uppa uppe uppp uppu upsa upse upup us-a usaa usad usan usap usas usba usbe usbs usda usde usdp usds usea used usee usen uses usna usnu uspa uspp usps ussa ussb usse usss ussu usua usun usus uuen uuuu