s-os sbbs sbcc sbcs sbds sbic sbmc sbor sbsd sbsi scbi sccc sccm sccs scdc scds sci- scic scid scim scio scir scis scmc scmm scmo scms scob scom scoo scor scr- scrc scri scrs scsc scsd scsi scso scsr sdcc sdco sddc sdds sdib sdic sdio sdmo sdms sdrc sdrs sdsc sdsm sdss sibc sibi sibo sibs sicc sici sicm sico sics sidd sidi sido sidr sids siim simd simi simm simo sims siod sior sios sirc siri siro sirr sirs sisc sisd sisi siss smbc smcc smdc smdr smic smid smis smoc smod smos smsc smsd smss sobo sobr sobs soci socm soco socr socs sodd sodo sods soic soim soir sois somb somi somm somo sood soom soor soos sorb sord sori sorm soro sorr sors sosi soso soss srbc srcc srib srim sris srmc sros srsd ssbr sscc ssci sscs ssdc ssdd ssdm ssid ssis ssmc ssoc ssrc ssri ssrm ssrs sssb sssc sssi sssm ssss