use '?' for JOKER (blank)

From letters H, E, T, E, R, O, K, A, R, Y, O, N, S  I made following words

13 letter words

heterokaryons[23]

12 letter words

heterokaryon[22]

9 letter words

hankerers[16], harkeners[16], keynoters[16], erythrons[15], snakeroot[13], nearshore[12], heartsore[12], shortener[12], ratooners[9], resonator[9]

8 letter words

eyehooks[18], hankerer[15], harkener[15], hearkens[15], hektares[15], thankers[15], keynoter[15], keynotes[15], keystone[15], honorary[14], erythron[14], herstory[14], keratose[12], ostrakon[12], retakers[12], streaker[12], honorees[11], honorers[11], hastener[11], heartens[11], honester[11], northers[11], yearners[11], oysterer[11], reasoner[8], ratooner[8], earstone[8], resonate[8], oestrone[8], terranes[8], antrorse[8], sororate[8]

7 letter words

eyehook[17], honkeys[17], hookeys[17], hearken[14], hankers[14], harkens[14], honkers[14], hookers[14], sharker[14], hektare[14], thanker[14], rookery[14], ryokans[14], yonkers[14], keynote[14], stenoky[14], streaky[14], keyster[14], heronry[13], hoorays[13], astheny[13], shantey[13], ethynes[13], eyeshot[13], honesty[13], rhytons[13], sneaker[11], snooker[11], rankers[11], karroos[11], retaken[11], retaker[11], ketones[11], retakes[11], rankest[11], tankers[11], restoke[11], reknots[11], stooker[11], kraters[11], starker[11], stroker[11], honoree[10], honorer[10], hoarsen[10], senhora[10], reshone[10], onshore[10], hearers[10], rehears[10], shearer[10], hoarser[10], earthen[10], hearten[10], another[10], thereon[10], horrent[10], norther[10], ethanes[10], toeshoe[10], aethers[10], heaters[10], reheats[10], anthers[10], thenars[10], earshot[10], heteros[10], hornets[10], shorten[10], thrones[10], hooters[10], reshoot[10], sheroot[10], shooter[10], soother[10], thorons[10], trasher[10], rhetors[10], shorter[10], yearner[10], yarners[10], arroyos[10], ternary[10], reentry[10], oratory[10], styrene[10], yestern[10], aroynts[10], strayer[10], royster[10], stroyer[10], arenose[7], earners[7], reearns[7], serrano[7], terrane[7], earnest[7], eastern[7], nearest[7], roseate[7], atoners[7], santero[7], senator[7], treason[7], estrone[7], ratoons[7], santoor[7], enroots[7], retears[7], serrate[7], tearers[7], errants[7], ranters[7], renters[7], rerents[7], sterner[7], roaster[7], restore[7], snorter[7], orators[7], rooster[7], rooters[7], toreros[7]

6 letter words

hanker[13], harken[13], honker[13], hooker[13], shaken[13], hookas[13], shnook[13], kasher[13], shaker[13], shrank[13], ranker[10], kroner[10], karroo[10], kronor[10], akenes[10], skeane[10], rakees[10], kernes[10], hereon[9], hearer[9], rehear[9], haeres[9], hearse[9], ahorse[9], ashore[9], hoarse[9], heroes[9], reshoe[9], earner[6], nearer[6], reearn[6], arenes[6], ranees[6]