sec- seca secc sece secs seea seec seel seem seep sees sela sele sell selm sels sema semc seme semp sems sepa sepe sepp seps sesa sesc sese sess slaa slac slae slam slap slas slcc slea slee slem slep sles sllm sllp slmm slpp slps slsa slsc smaa smac smal smap smas smcc smcp smea smec smee smep smlc smle smls smpa smps smsc smsp smss sp-a spac spae spal spam spap spas spca spcc spcs spea spec spee spel spes spla splc sple splp spls spma spme spms spps spsa spse spsp spss ssaa ssac ssam ssap ssas ssca sscc ssce sscp sscs ssec ssee ssem ssep sses ssla sslc ssle sslp ssmc ssml sspa sspc sspe sspl ssps sssa sssc sssm ssss