sfro sfss sief siel sier sies sife siff sifl sifo sifr sil- sile silf sili sill silo sils sioe siol siop sior sios sipe sipi sipo sipp sips sire sirf siri siro sirp sirr sirs sise sisi siss sl-i slee slep sler sles slie slip slir sllp sloe sloo slop slos slpi slpp slps slre slrp slrs soel soeo soep soes sofi sofo soie soif soil soir sois sole solf soli soll solo solp solr sols soof sool soop soor soos sope sopi sopo sopp sops sore sori soro sorr sors sose sosi soso soss spee spef spel sper spes spfs spie spio spip spir spis sple splo splp splr spls spoo spop spor spos sppf spps spri spro sprs spse spso spsp spss sreo sres srfi sris sros srps srsp ssee ssep sses ssfl ssfp ssis ssle sslp ssop sspe sspf sspl sspo ssps ssri ssrl ssrs sssf sssi ssss