use '?' for JOKER (blank)

From letters K, N, U, C, K, L, E, H, E, A, D, E, D  I made following words

13 letter words

knuckleheaded[28]

11 letter words

knucklehead[25]

10 letter words

lunkheaded[19]

8 letter words

deckhand[19], knuckled[19], undecked[16], lunkhead[16], launched[14], unheeded[13], unkeeled[13], unhealed[12], leadened[10], unleaded[10]

7 letter words

keckled[18], knacked[18], cheeked[17], chalked[17], hackled[17], heckled[17], chunked[17], knuckle[17], cleeked[14], clanked[14], caulked[14], uncaked[14], clunked[14], leached[13], leeched[13], kneaded[13], lunched[13], headend[12], handled[12], kneeled[12], candled[11], unceded[11], cleaned[10], enlaced[10], unlaced[10], ladened[9], needled[9], unladed[9]

6 letter words

chukka[19], kecked[17], hacked[16], keckle[16], keddah[15], hackee[15], keeked[15], hackle[15], heckle[15], lekked[15], huckle[15], kuchen[15], decked[14], hanked[14], ducked[14], hulked[14], calked[13], lacked[13], deckel[13], deckle[13], necked[13], lucked[13], leched[12], uncake[12], dunked[12], headed[11], heeded[11], daledh[11], chelae[11], heddle[11], leaked[11], keeled[11], handed[11], achene[11], keened[11], ankled[11], huddle[11], nuchae[11], launch[11], nuchal[11], decade[10], healed[10], heeled[10], danced[10], handle[10], alkene[10], adduce[10], deduce[10], deuced[10], educed[10], cuddle[10], hauled[10], ekuele[10], decane[9], candle[9], lanced[9], caudle[9], cedula[9], unclad[9], delead[8], leaded[8], deaden[8], deaned[8], needed[8], dandle[8], landed[8], enlace[8], lauded[8], delude[8], dueled[8], eluded[8], undead[8], denude[8], dudeen[8], duende[8], endued[8], cuneal[8], lacune[8], launce[8], unlace[8], aneled[7], leaden[7], leaned[7], needle[7], unlade[7], unlead[7]

5 letter words

knack[15], hacek[14], cheek[14], chalk[14], kench[14], chunk[14], kheda[13], kulak[13], caked[12], ached[11], eched[11], ackee[11], deked[11], cleek[11], clank[11], duked[11], caulk[11], dunch[11], clunk[11], haded[10], chela[10], leach[10], leech[10], laked[10], hance[10], hence[10], knead[10], naked[10], kneed[10], nucha[10], nuked[10], lunch[10], ceded[9], haled[9], akene[9], ankle[9], kneel[9], clade[8], decal[8], laced[8], acned[8], caned[8], dance[8], deuce[8], educe[8], cauld[8], ducal[8], clued[8], lehua[8], adunc[8], dunce[8], uhlan[8], addle[7], dedal[7], laded[7], deled[7], ended[7], clean[7], lance[7], uncle[7], eland[6], laden[6], naled[6], elude[6], endue[6], undee[6], ulnad[6], unled[6], anele[5], ulnae[5]

4 letter words

aced[7], cade[7], dace[7]