bbbb bbbs bblb bbls blls blno blob blon bloo blss bnss bobb bobo bobs boll boln bolo bols bonn bono bons boob bool boon boos bosn boso boss bsns bson bsos lbos llbs llll lloo lnso lob- lobb lobo lobs loll lolo lols lono lons loob lool loon loos loso loss lson lsso nbbo nlls nnls nnnn nnos nnsl nnss nobo nobs noll nolo nols non- nonn nono nons noo- noob nool noon nooo noos nos- noss nsbo nsls nsos nssb nsso nsss obbo obls obol obon obos obsn obss olbo ollo olon olos onno onon onos onso oolo oons oooo ooos oslo osno osoo osos ossb osso s-os sbbs slln slob slon sloo slos snns snob snoo snos sobo sobs soll soln solo sols son- sono sons sool soon soos soso soss ssbn ssns sssb ssss