bbbb bbbs bblb bbls bibb bibi bibl bibo bibs biis bili bill bilo bils bio- bioi biol bios bipp bips bis- bisl biso bisp biss blio blip blis blls blob bloo blop blsp blss bobb bobi bobo bobs boi- boii boil bois boli boll bolo bols boob bool boop boos bopp bops bosi boso boss bsos bspp ibis ibos ibss iiii iiio iiis iioi iioo iiop iios iisi iisp ilio ilis ill- illi illo illp ills iloo ilos iobi ioii ioio iolo iooi iooo ioos iopl iops ioso ipil iplo ipop ipos ippo ipsi ipso ipsp ipss isbl isil isis isls iso- isol isop isos isps issi isso issp isss lbos libo libs liii liis lilb lili lill lilo lils lio- lios lip- lipb lipi lipl lipo lipp lips lisi liso lisp liss llbs llll lloo llps lob- lobb lobi lobo lobs lois loli loll lolo lols loob lool loop loos lopi lopp lops losi loso losp loss lppl lpss lspl lsso lssp obbo obis obls oboi obol obos obss oiii oils oios olbo olib olio olis olli ollo olos olsi oobi oolo oooo ooos oops oosi opii opio opis opls opo- opos oppi oppo opps opsi osbp osii osip osis osli oslo osoi osoo osos ossb ossi osso pbil pbsp pibb pibi piip pil- pili pill pilo pils piob pipi pipo pipp pips pisi piso piss plib plio plip plis plob ploo plop plos plpp plsi plss pobo pobs poil poio pois poli poll polo pols pool poop poos pop- popi popo popp pops posb posi poso poss ppib ppli pplo ppos pppo pppp ppps ppss psil psip psis psoi psol psos pspi pspp psps psso s-ib s-ii s-os sbbs sbsi sbsp sibi sibo sibs sil- sili sill silo sils siol siop sios sipi sipo sipp sips sisi siss sl-i slbp slib slip sllp slob sloo slop slos slpi slpp slps sobo sobp sobs soil sois soli soll solo solp sols sool soop soos sopi sopo sopp sops sosi soso soss spib spio spip spis splo splp spls spoo spop spos spps spso spsp spss ssis sslp ssop sspl sspo ssps sssb sssi ssss