bbbb bbfn bbin bbox bibb bibi bibo biff bifi biin bin- bini binn bino bio- bioi bion biox bixi bnib bnin bobb bobi bobo boff boi- boii boin boni bonn bono boob boof boon boox ffff ffii fiff fifi fifo fiii fini finn fino fion fixx fofo foin foix fono foof foon foxx i-no ibfi ibon ibox ifbb ifni ifno iiii iiio iino iioi iioo inbo infi info inni inno ino- inoi inon inox iobi ioii ioio ioni ionn iono ioof iooi iooo ixxi n-ii nbbo nfff nfib nfix nfon nibi nibo niff nini nino nion nioo nixi nnnn nobi nobo nofi nofx noib noif noin noio noix non- noni nonn nono nonx noo- noob noon nooo obbo obin obix oboi obon obox off- offo ofno oiii oion onix onni onno onon oobi ooff oooo oxi- oxo- oxof oxon oxox oxxo x-fi xbin xbox xfin xibo xiii xion xixi xoxo xxii xxix xxxi xxxo xxxx