sorn soro sorr sors soru sosi soso soss soum soun sour sous srcc srim sris srmc srni srnn srno sros sscc ssci sscs ssin ssis ssmc ssns ssoc ssrc ssri ssrm ssrs sssc sssi sssm ssss suc- succ suci sucr sucs suin suio suir suis sum- sumi sumo sums sumu sun- suni sunn suno suns sunu suor suos sur- surc suri surn suro surr surs suru sus- susi suso suss susu suum suus ucci ucin ucio ucmc ucom ucon ucos ucrc ucsc ucsm ucsu uims uirr ummo umms umno umor umri umsu umus uncc unci unco uncs uni- unic unii unin unio unir unis unmc unmr unni unno unns unon unos unro unrs uns- unsc unso unum unus uocc uomo uor- urci uric urim urin uris uriu urmi urni urns uro- urom uroo urri ursi urso urss ursu urum urun urur urus uscc uscm usco uscs usim usin usis usmc usmm usms usnc usno usnr usnu usoc usoi usos ussc ussr usss ussu usui usun usus uuni uuno uuoc uuri uusi uuuu