bbbb bbfn bbin bblb bbox bffl bibb bibi bibl bibo biff bifi biin bili bill bilo bin- bini binn bino bio- bioi biol bion biox bixi blin blio blix blni blno blob blon bloo bnib bnin bobb bobi bobo boff boi- boii boil boin boli boll boln bolo boni bonn bono boob boof bool boon boox ffff ffii fiff fifi fifo fiii fiil fili fill filn filo fini finn fino fion fixx flii flin flix flnb flob flon floo flox fofo foil foin foix foli foll folo folx fono foof fool foon foxx i-no ibfi ibon ibox ifbb ifil ifni ifno iiii iiio iino iioi iioo ilbx ilin ilio ill- illi illo ilni ilno iloo ilxx inbo infi infl info inni inno ino- inoi inol inon inox iobi ioii ioio iolo ioni ionn iono ioof iooi iooo ixil ixxi libo libx liff lifl lifo lifx liii liin lilb lili lill lilo linn lino linx lio- lion lixi llll lloo lob- lobb lobi lobo loff lofi lofn loif loin loix loli loll lolo loni lono loob loof lool loon lox- loxo lxii lxxi lxxx n-ii nbbo nbfl nfff nfib nfix nfon nibi nibo niff nili nill nilo nini ninl nino nion nioo nixi nnnn nobi nobo nofi nofx noib noif noil noin noio noix nolf noli noll nolo non- noni nonn nono nonx noo- noob nool noon nooo obbo obin obix oboi obol obon obox off- offo ofno oiii oion olbo olib olin olio olli ollo olof olon onil onix onlf onni onno onon oobi ooff oolo oooo oxi- oxo- oxof oxon oxox oxxo x-fi xbin xbox xfin xibo xiii xil- xili xill xion xixi xlib xlii xlix xlox xolo xoxo xxii xxix xxxi xxxo xxxx