sfrc sfro sfss snab snar snas snba snca sncc sncf snco sneb snee sner snes snns snoa snob snoc snoo snor snos snra snrs soan soar soas soba sobe sobo sobr sobs soca soce soco socr socs soea soec soen soeo soes sofa sofo son- sona sone sono sons soof soon soor soos sora sorb sore sorn soro sorr sors sosa sose soso soss sraf sras srbc srcc sreb srec sreo sres srfc srna srnn srno sros ssaa ssab ssac ssan ssao ssas ssbn ssbr ssca sscc ssce sscs ssec ssee sses ssfc ssns ssoc ssra ssrc ssrs sssa sssb sssc sssf ssss