smur smus sobo sobr sobs sobu soch socm soco socr socs sogh sogo sogs sohh sohm soho sohs sohu somb somm somo soog soom soor soos sorb sorg sorh sorm soro sorr sors soru sosh soso soss soum sour sous srbc srcc srch srgb srhs srmc sros srub ssbr sscc sscs ssgs sshs ssmc ssoc ssrc ssrg ssrm ssrs sssb sssc sssh sssm ssss sub- subb subg subh subm subo subs suc- succ such sucr sucs sug- sugg sugh sugo suhb suho suhr sum- sumo sums sumu suoh suor suos sur- surc surg suro surr surs suru sus- suso suss susu suum suus ubbo uboc ubos ucbc ucho uchs ucmc ucom ucos ucrc ucsb ucsc ucsm ucsu ugcc ugcg uggo uggs ughs ugos ugro ugur uguu uhoh uhrs uhss uhuh umb- umbo umgo umhs ummg ummo umms umor umsu umus uocc uomo uor- urbs urch urgh urgu urho uro- urom uroo urrh urso urss ursu urum urur urus usbc usbr usbs uscc uscg usch uscm usco uscs usgo usho ushr ushs ushu usmc usmm usms usoc usog usos ussb ussc ussr usss ussu usus uuoc uuuu