riri rirs risa risc risi rism riss rixc rmas rmbs rmsc rras rrmc rrrr rsaa rsai rsbi rscc rscs rsis rsma rsmx rssa s-ib s-ic s-ii sa-c sa-x saab saac saam saar saas saba sabb sabc sabi sabr sabs saca sacc saci sacr sacs saia saic saim sair sais saix sam- sama samc sami samm sams sara sarc sari sarm sarr sars sasa sasc sasi sasm sass saxa saxi sbaa sbac sbai sbar sbas sbbs sbca sbcc sbcs sbia sbic sbma sbmc sbsa sbsi scaa scab scac scai scam scar scas scba scbi sccc sccm sccs sci- scia scic scim scir scis scma scmc scmm scms scr- scra scrc scri scrs scsa scsc scsi scsr siaa siab siac siai siam sias siba sibc sibi sibs sica sicc sici sicm sics siim sima simi simm sims sira sirc siri sirr sirs sisa sisc sisi siss sixa sixx smaa smac smai smas smax smba smbc smcc smia smic smis smsc smss sram sras srbc srcc srib srim sris srmc ssaa ssab ssac ssam ssas ssbr ssca sscc ssci sscs ssis ssmc ssra ssrc ssri ssrm ssrs sssa sssb sssc sssi sssm ssss xaar xara xbai xbar xbra xcas xcii xcis xcri xica xics xiii xima xisi xixi xmas xmax xmii xmms xxii xxix xxxi xxxx