rsos rspb rspo rsps rsre rssl s-ib s-ii s-os sbbs sber sbor sbse sbsi sbsp se-e se-i se-o se-s sebe sebi sebo sebs seeb seel seep seer sees seie seii seil seip seir seis selb sele seli sell selo sels seoi seol seop sepe sepi sepo sepp sepr seps serb sere seri sero serp serr sers sese sesi seso sess sibe sibi sibo sibs siel sier sies sil- sile sili sill silo sils sioe siol siop sior sios sipe sipi sipo sipp sips sire siri siro sirp sirr sirs sise sisi siss sl-i slbp sleb slee slep sler sles slib slie slip slir sllp slob sloe sloo slop slos slpi slpp slps slre slrp slrs sobe sobo sobp sobr sobs soel soeo soep soes soie soil soir sois sole soli soll solo solp solr sols sool soop soor soos sope sopi sopo sopp sops sorb sore sori soro sorr sors sose sosi soso soss speb spee spel sper spes spib spie spio spip spir spis sple splo splp splr spls spoo spop spor spos spps spri spro sprs spse spso spsp spss sreb sreo sres srib sris sros srps srsp ssbr ssee ssep sses ssis ssle sslp ssop sspe sspl sspo ssps ssri ssrl ssrs sssb sssi ssss