sbfc sbic sbig sbor sbsi sbus scbi sccc sccs scfc scfg scfi scgs sci- scic scif scio scir scis scob scog scoo scor scr- scrc scri scrs scsc scsi scso scsr scsu scub scug scur sfbc sfcc sfcg sfco sfcs sffc sfio sfog sfor sfos sfrc sfro sfss sfsu sgcb sgcg sggg sggs sgic sgio sgro sgss sibc sibi sibo sibs sibu sicc sici sico sics sicu siff sifo sifr sifu sigg sigi sigo sigs sior sios siou sirc sirf siri siro sirr sirs siru sisc sisi siss sisu siui sius sobo sobr sobs sobu soci soco socr socs sofi sofo sogi sogo sogs soic soif soir sois soof soog soor soos sorb sorg sori soro sorr sors soru sosi soso soss souf sour sous srbc srcc srfc srfi srgb srib sris sros srub ssbr sscc ssci sscs ssfc ssgs ssis ssoc ssrc ssrg ssri ssrs sssb sssc sssf sssi ssss sub- subb subg subi subo subs suc- succ suci sucr sucs suf- sufc suff sufi sufr sufs sufu sug- sugg sugi sugo suig suio suir suis suor suos sur- surc surf surg suri suro surr surs suru sus- susi suso suss susu suus ubbi ubbo ubic ubii ubir ubis uboc ubos ucbc ucci ucfb ucio ucos ucrc ucsb ucsc ucsf ucsu ufcu ufos ugcc ugcg uggo uggs ugis ugos ugri ugro ugur uguu uirr uocc uofg uofo uor- urbi urbs urci urff urfi urgi urgu urib uric urif uris uriu uro- uroo urri ursi urso urss ursu urur urus usbc usbr usbs uscc uscf uscg usco uscs usfc usfi usfs usgo usif usis usoc usog usoi usos ussb ussc ussf ussr usss ussu usui usus uuoc uuri uusi uuuu