sodu soic soim soir sois somi somm somo sood soom soor soos sord sori sorm soro sorr sors soru sosi soso soss soud soum sour sous srcc srim sris srmc sros srsd sscc ssci sscs ssdc ssdd ssdm ssid ssis ssmc ssoc ssrc ssri ssrm ssrs sssc sssi sssm ssss suc- succ suci sucr sucs sudd sudi sudo suds suid suio suir suis sum- sumd sumi sumo sums sumu suor suos sur- surc surd suri suro surr surs suru sus- susd susi suso suss susu suum suus ucci ucdc ucdd ucio ucmc ucom ucos ucrc ucsc ucsd ucsm ucsu uddi udds udic udid udim udir udmc udoo udos udsd uims uirr uisd ummo umms umor umri umsu umus uocc uomo uor- urci urds urdu uric urim uris uriu urmi uro- urom uroo urri ursi urso urss ursu urum urur urus uscc uscm usco uscs usdc usdm usdo usds usim usis usmc usmd usmm usms usoc usoi usos ussc ussr usss ussu usui usus uuoc uuri uusi uuuu