sccc scce sccl sccs scdc scds scec scee scel sck- sckl scl- sclc sclk scls scob scok scol scoo scsc scsd scsl scso sdcc sdco sddc sdds sdes sdlc sdls sdsc sdsl sdss se-c se-d se-e se-k se-o se-s sebe sebo sebs sec- secc secd sece seck seco secs sede sedo seds seeb seec seed seek seel sees seke sekk seko selb seld sele selk sell selo sels seoc seod seok seol sesc sese seso sess sked skee skel skeo skes skoe skol sksd skss slcc slcd slds sleb sled slee sles slob sloc slod sloe sloo slos slsc sobe sobo sobs soce sock socl soco socs sodd sode sodo sods soec soel soeo soes soke sokk soko sold sole solk soll solo sols sood sook sool soos sose soso soss sscc ssce sscs ssdc ssdd ssec ssee sses sslc ssle ssoc sssb sssc ssss