bbbb bbch bbci bcbc bccc bcci bhcc bhoi bibb bibi bibo bicc bich bici bico bihi bio- bioc bioi bobb bobi bobo boch boco boho boi- boii boob booc booh c-bo cbbc cbcc ccbc cccb cccc ccci ccic ccii ccob ccoc chch chci chib chic chih choc choh choi choo cibc cibi cibo cicc cich cici cico ciii ciob cobb cobh cobi cobo coch coco coho coob cooh h-ii hbic hbio hboc hcbc hccb hccc hcch hchi hhhh hi-c hibi hicc hich hico hihc hihi hiho hiob hioc hobo hoch hoho icbc iccb iccc icci icco ichc ichi icho icoc ihcc ihob iiii iiio iioi iioo iobi ioci ioii ioio iooi iooo obbo oboi ocbc occc occi ochi ohcc ohhi ohho ohio ohob ohoh oici oiii oobi ooho oooh oooo