use '?' for JOKER (blank)

From letters B, A, C, K, P, E, D, A, L, L, I, N, G  I made following words

13 letter words

backpedalling[25]

12 letter words

backpedaling[24]

9 letter words

backpedal[20], blacklead[18], blackland[18], incapable[15], caballing[14], pinballed[14], pedalling[13], dalliance[12], angelical[12], englacial[12], galenical[12]

8 letter words

packaged[18], packable[18], blackleg[17], backland[17], blacking[17], pancaked[17], panicked[17], balkline[14], linkable[14], placable[14], caballed[13], balladic[13], abidance[13], balanced[13], palladic[13], panicled[13], badinage[12], blindage[12], alkaline[12], pillaged[12], pedaling[12], pleading[12], gainable[11], angelica[11], calendal[11], canalled[11], gallican[11], labeling[11], pelagial[11], diallage[10], alliance[10], ancillae[10], canaille[10]

7 letter words

dieback[16], blacked[16], backing[16], becking[16], package[16], pickled[16], packing[16], pecking[16], decking[15], blacken[15], pancake[15], baglike[14], blanked[14], clanked[14], blinked[14], clinked[14], nickled[14], balking[14], calking[14], lacking[14], pedicab[14], peaking[14], planked[14], plinked[14], kelping[14], alkalic[13], likable[13], ikebana[13], capable[13], cabined[12], cabling[12], leaking[12], linkage[12], agapeic[12], palaced[12], bipedal[12], piebald[12], pelagic[12], peacing[12], placing[12], cleping[12], bandage[11], beading[11], incaged[11], balance[11], clanged[11], glanced[11], balding[11], blading[11], clinged[11], alkalin[11], pliable[11], capelan[11], calpain[11], biplane[11], capelin[11], panicle[11], pelican[11], pinball[11], alcaide[10], ballade[10], alcalde[10], cedilla[10], gallica[10], glacial[10], canaled[10], candela[10], decanal[10], inlaced[10], angelic[10], anglice[10], galenic[10], balling[10], calling[10], belling[10], celling[10], pillage[10], paladin[10], plained[10], paginal[10], leaping[10], pealing[10], palling[10], gallied[9], abelian[9], aligned[9], dealing[9], leading[9], balneal[9], canella[9], albinal[9], ancilla[9], linable[9], ladling[9], gallein[8], nigella[8]

6 letter words

backed[15], balked[13], calked[13], lacked[13], bilked[13], licked[13], banked[13], nicked[13], baking[13], caking[13], deking[12], kinged[12], cabled[11], killed[11], beglad[10], gabled[10], bilged[10], alkali[10], banged[10], binged[10], ceding[10], acedia[9], alcade[9], bailed[9], ballad[9], balled[9], called[9], begall[9], billed[9], gallic[9], indaba[9], cnidae[9], baaing[9], incage[9], candle[9], lanced[9], bangle[9], glance[9], gelada[8], abelia[8], aecial[8], galled[8], labial[8], laical[8], alible[8], labile[8], liable[8], gilled[8], agenda[8], gained[8], anlace[8], angled[8], dangle[8], lagend[8], inlace[8], allied[7], anlage[7], galena[7]