slcc slea sleb slee sler sles slob sloc sloe sloo slos slrc slre slrs slsa slsc soal soar soas soba sobe sobo sobr sobs soca soce socl soco socr socs soea soec soel soeo soes sofa sofo sola sole solf soll solo solr sols soof sool soor soos sora sorb sore soro sorr sors sosa sose soso soss sraf sras srbc srcc sreb srec sreo sres srfc sros ssaa ssab ssac ssao ssas ssbr ssca sscc ssce sscs ssec ssee sses ssfc ssfl ssla sslc ssle ssoc ssra ssrc ssrl ssrs sssa sssb sssc sssf ssss