rise risi risk riss rkkf rkss rred rrfc rrif rrrr rscc rscs rsdd rsds rsee rsfc rsid rsis rsre s-ic s-ii sccc scce sccs scdc scdf scds scec scee scer scfc scfe scfi sci- scic scid scie scif scir scis sck- scr- scrc scre scri scrs scsc scsd scsi scsr sdcc sddc sdds sdef sder sdes sdfc sdic sdif sdrc sdrs sdsc sdsf sdss se-c se-d se-e se-f se-i se-k se-s sec- secc secd sece seck secr secs sede seds seec seed seef seek seer sees seff sefi seid seie seif seii seik seir seis seke seki sekk serc serd sere serf seri serk serr sers sesc sese sesi sess sfcc sfcs sfdc sfdk sfer sffc sfrc sfss sicc sice sici sick sics sidd side sidi sidr sids siec sied sief siek sier sies sife siff sifr siik sike siki sikr siks sirc sire sirf siri sirk sirr sirs sisc sisd sise sisi sisk siss sked skee skei sker skes skfc skic skid skie skif skik skir skis sksd skss srcc srde srec sres srfc srfi sris srsd sscc ssce ssci sscs ssdc ssdd ssdf ssec ssee sses ssfc ssid ssis ssrc ssri ssrs sssc sssf sssi ssss