use '?' for JOKER (blank)

From letters N, O, N, O, C, C, U, P, A, T, I, O, N, A, L  I made following words

15 letter words

nonoccupational[21]

12 letter words

occupational[18]

11 letter words

uncanonical[15]

10 letter words

occupation[16], noncapital[14], copulation[14], nonutopian[12], annulation[10]

9 letter words

cocaptain[15], canonical[13], colcannon[13], placation[13], noctiluca[13], cantaloup[13], noncoital[11], connation[11], nonaction[11], planation[11], nonpliant[11], pantaloon[11], continual[11], inoculant[11], plutonian[11]

8 letter words

occupant[14], lactonic[12], coaction[12], platonic[12], cooption[12], cocoanut[12], capitula[12], plutonic[12], cantonal[10], location[10], conation[10], nontonic[10], plantain[10], talapoin[10], nopalito[10], optional[10], nonpoint[10], nautical[10], continua[10], countian[10], locution[10], continuo[10], unpliant[10], national[8], notional[8], nontonal[8], lunation[8]

7 letter words

canopic[13], piccolo[13], piccata[13], puccoon[13], occiput[13], conical[11], laconic[11], canonic[11], colonic[11], cooncan[11], calpain[11], capital[11], captain[11], tapioca[11], capitol[11], coalpit[11], optical[11], topical[11], caption[11], paction[11], copilot[11], acicula[11], council[11], account[11], coconut[11], anconal[9], cannoli[9], noncola[9], actinal[9], cantina[9], actinon[9], contain[9], coolant[9], octanol[9], platina[9], pintano[9], platoon[9], pontoon[9], cannula[9], uncinal[9], inocula[9], inconnu[9], pinnula[9], lunatic[9], auction[9], caution[9], linocut[9], unction[9], nuptial[9], unplait[9], opuntia[9], utopian[9], outplan[9], alation[7], antlion[7], outlain[7]

6 letter words

calpac[12], alcaic[10], cicala[10], cancan[10], cloaca[10], calico[10], cocain[10], clonic[10], cocoon[10], apical[10], caplin[10], lactic[10], cantic[10], ocicat[10], capita[10], captan[10], catnap[10], catnip[10], atopic[10], octopi[10], coplot[10], unclip[10], copula[10], cupola[10], oilcup[10], upcoil[10], coupon[10], cultic[10], occult[10], copout[10], canola[8], alnico[8], oilcan[8], cannon[8], coloni[8], pinnal[8], anopia[8], panino[8], cantal[8], catlin[8], tincal[8], incant[8], tannic[8], catalo[8], citola[8], coital[8], action[8], atonic[8], cation[8], cannot[8], canton[8], patina[8], pinata[8], taipan[8], platan[8], plaint[8], pliant[8], tapalo[8], pontil[8], option[8], potion[8], ponton[8], canula[8], lacuna[8], uncial[8], uncoil[8], nuncio[8], uncool[8], paulin[8], actual[8], tunica[8], incult[8], toluic[8], toucan[8], utopia[8], pluton[8], alanin[6], annona[6], latina[6], tannin[6], atonia[6], atonal[6], latino[6], talion[6], anoint[6], nation[6], lotion[6], notion[6], annual[6], annuli[6], unnail[6], nounal[6]

5 letter words

canal[7], lanai[5]