sbbs sbca sbcc sbcs sbfc sbia sbic sbma sbmc sbor sbsa sbsi scaa scab scac scaf scai scam scar scas scba scbi sccc sccm sccs scfa scfc scfi scfm sci- scia scic scif scim scio scir scis scma scmc scmm scmo scms scob scom scoo scor scr- scra scrc scri scrs scsa scsc scsi scso scsr sfar sfas sfba sfbc sfca sfcc sfco sfcs sffc sfia sfio sfma sfmm sfor sfos sfra sfrc sfro sfss siaa siab siac siaf siai siam sias siba sibc sibi sibo sibs sica sicc sici sicm sico sics sifa siff sifo sifr siim sima simi simm simo sims sior sios sira sirc sirf siri siro sirr sirs sisa sisc sisi siss smaa smac smai smas smba smbc smbf smcc smia smic smif smis smoc smof smos smrf smsc smss soam soar soas soba sobo sobr sobs soca soci socm soco socr socs sofa sofi sofo soia soic soif soim soir sois soma somb somi somm somo soof soom soor soos sora sorb sori sorm soro sorr sors sosa sosi soso soss sraf sram sras srbc srcc srfc srfi srib srim sris srmc sros ssaa ssab ssac ssam ssao ssas ssbr ssca sscc ssci sscs ssfc ssis ssmc ssoc ssra ssrc ssri ssrm ssrs sssa sssb sssc sssf sssi sssm ssss