sccm sccs scda scdc scds scea scec scee scer scma scmc scmm scms scna scnd scnr scr- scra scrc scre scrn scrs scsa scsc scsd scsn scsr sdae sdba sdcc sddc sdds sder sdes sdma sdms sdna sdrc sdrs sdsc sdsm sdss se-c se-d se-e se-n se-s seaa seab seac sead seam sean sear seas seba sebe sebs sec- seca secc secd sece secn secr secs seda sede seds seea seeb seec seed seem seen seer sees sema semc seme semn sems sena send sene senn senr sens sera serb serc serd sere serm sern serr sers sesa sesc sese sess smaa smac smad sman smas smba smbc smbe smcc smdc smdr smea smeb smec smed smee smen smnc smsc smsd smsn smss snab snad snam snar snas snba snca sncc snda sneb sned snee sner snes snns snra snrs snsd sram sras srbc srcc srde sreb srec srem sres srmc srna srnn srsd ssaa ssab ssac ssam ssan ssas ssbn ssbr ssca sscc ssce sscs ssdc ssdd ssdm ssec ssee ssem sses ssmc ssns ssra ssrc ssrm ssrs sssa sssb sssc sssm ssss