bbbb bbbs bblb bbls blls blob bloo blop blsp blss bobb bobo bobs boll bolo bols boob bool boop boos bopp bops boso boss bsos bspp lbos llbs llll lloo llps lob- lobb lobo lobs loll lolo lols loob lool loop loos lopp lops loso losp loss lppl lpss lspl lsso lssp obbo obls obol obos obss olbo ollo olos oolo oooo ooos oops opls opo- opos oppo opps osbp oslo osoo osos ossb osso pbsp plob ploo plop plos plpp plss pobo pobs poll polo pols pool poop poos pop- popo popp pops posb poso poss pplo ppos pppo pppp ppps ppss psol psos pspp psps psso s-os sbbs sbsp slbp sllp slob sloo slop slos slpp slps sobo sobp sobs soll solo solp sols sool soop soos sopo sopp sops soso soss splo splp spls spoo spop spos spps spso spsp spss sslp ssop sspl sspo ssps sssb ssss