use '?' for JOKER (blank)

From letters J, A, C, K, H, A, M, M, E, R, I, N, G  I made following words

13 letter words

jackhammering[34]

10 letter words

jackhammer[30]

9 letter words

hammering[17], engrammic[16]

8 letter words

hijacker[24], charking[18], icekhana[17], charming[16], marching[16], chimaera[15], creaking[15], chairman[15], chairmen[15], remaking[15], cramming[15], reaching[14], amercing[13], creaming[13], germanic[13]

7 letter words

jacking[21], jamming[19], jerking[19], hackman[18], hackmen[18], jammier[18], hacking[17], harijan[17], kachina[16], hamming[15], hemming[15], keramic[15], harking[15], gherkin[15], machine[14], chimera[14], hammier[14], arcking[14], carking[14], racking[14], recking[14], marchen[14], marking[14], ganache[13], macrame[13], changer[13], arching[13], chagrin[13], charing[13], harming[13], ramekin[13], grimace[12], gammier[12], archean[12], archine[12], harmine[12], ramming[12], anaemic[11], hearing[11], carmine[11], carnage[10], anergic[10], manager[10], germina[10], mangier[10], reaming[10], acarine[9], carinae[9], anergia[8]

6 letter words

hijack[22], jacker[19], jicama[17], ganjah[17], jammer[17], jerkin[17], jinker[17], hejira[16], hackie[15], chakra[15], charka[15], hacker[15], karmic[14], haemic[13], maihem[13], caking[13], hankie[13], manche[13], making[13], chimar[13], chimer[13], hammer[13], jarina[13], hanker[13], harken[13], cammie[12], change[12], aching[12], eching[12], kinema[12], charge[12], cakier[12], graham[12], grinch[12], canker[12], nicker[12], agamic[11], chaine[11], macing[11], haemin[11], achier[11], cahier[11], hermai[11], gramma[11], gammer[11], gramme[11], megrim[11], anarch[11], inarch[11], enrich[11], incher[11], richen[11], raking[11], harmin[11], menhir[11], aahing[10], haeing[10], caiman[10], maniac[10], anemic[10], cinema[10], iceman[10], ammine[10], immane[10], hegari[10], hegira[10], camera[10], maimer[10], hangar[10], hanger[10], rehang[10], haring[10], hinger[10], nigher[10], kinara[10], carman[10], carmen[10], mincer[10], merman[10], incage[9], manage[9], magian[9], enigma[9], gamine[9], agaric[9], cagier[9], megara[9], gamier[9], imager[9], maigre[9], mirage[9], arcing[9], caring[9], racing[9], cering[9], cringe[9], hernia[9], ragman[9], engram[9], german[9], manger[9], ragmen[9], arming[9], margin[9], anemia[8], arcane[8], acinar[8], arnica[8], carina[8], crania[8], carnie[8], airman[8], marina[8], airmen[8], marine[8], remain[8], earing[7], gainer[7], reagin[7], regain[7], regina[7]

5 letter words

hacek[14], haika[12], mache[12], chime[12], hemic[12], gamic[10], magic[10], amice[9], amiga[8], image[8], aecia[7]