bbbb bbdd bbdo bbeb bbox bcbc bccc bcde bcec bdbc bddc bebb bebe bebo bede bedo beeb beed beo- beod bobb bobe bobo boce boco bodb bode bodo boec boee boeo boob booc bood booe boox c-bo c-cd cbbc cbcc cbce cbdb cbdc cbdo cbec cbee cbox ccbc cccb cccc ccdc cced ccee ccob ccoc ccod cd-e cddb cdec cdex cec- cece ceco cedd cede cedo ceeb ceec cexe cobb cobe cobo coce coco codd code coed coex coob cood coxe cxxx d-bo dbcc dcbc dccb dccc dcdb dcxx dddd ddoc debe dec- decc decd dece deco dedd dede dedo deeb deed dex- dexe do-x dobb dobe doce doco dod- dodd dode dodo doob dood dxbc dxbe dxcb dxcc dxco dxdc dxec dxed dxoc dxxx ebbc ebbo ebcc ebed eboe eboo ebox ecbc ecbe eccb eccc ecce ecco ecdc eced eco- ecod eddc edde eddo ede- edex edoc edod eede eeee eeoc eocd eode exco exec exed exo- exod o-eo obbo obec obed obex oboe obox ocbc occc oce oced ocee odbo oddd oded odeo odex odoo oec- oecc oedo oeec oobe oooo oxo- oxox oxxo x-ed xbcd xbee xbox xdcc xexe xobc xoco xoxo xxxo xxxx