scra scrc scre scrs scsa scsc scsr se-c se-e se-f se-k se-s seaa seac seaf seak sear seas sec- seca secc sece seck secr secs seea seec seef seek seer sees sefa seff seka seke sekk sera serc sere serf serj serk serr sers sesa sesc sese sess sfar sfas sfca sfcc sfcs sfer sffc sfra sfrc sfss sjac sjcc sjcs skac skaf skar skee sker skes skfc skra skss sraf sras srcc srec sres srfc ssaa ssac ssas ssca sscc ssce sscs ssec ssee sses ssfc ssra ssrc ssrs sssa sssc sssf ssss