scnr scr- scrc scre scri scrn scrs scsc scsi scsn scsr se-c se-e se-f se-i se-n se-s sec- secc sece secn secr secs seec seef seem seen seer sees seff sefi seie seif seii seim sein seir seis semc seme semi semn sems sene seni senn senr sens serc sere serf seri serm sern serr sers sesc sese sesi sess sfcc sfcs sfer sffc sfmm sfne sfrc sfss sicc sice sici sicm sics siec sief sien sier sies sife siff sifr siim sime simi simm sims sine sini sinn sins sirc sire sirf siri sirr sirs sisc sise sisi siss smcc smec smee smei smen smic smie smif smin smis smnc smrf smsc smsn smss sncc sncf snee sner snes snie snir snns snrs srcc srec srem sres srfc srfi srim sris srmc srni srnn sscc ssce ssci sscs ssec ssee ssem sses ssfc ssin ssis ssmc ssns ssrc ssri ssrm ssrs sssc sssf sssi sssm ssss