use '?' for JOKER (blank)

From letters Y, O, U, T, H, F, U, L, N, E, S, S  I made following words

12 letter words

youthfulness[21]

9 letter words

housefuls[15], funhouses[15], nuthouses[12], tenuously[12]

8 letter words

honeyful[17], housefly[17], youthful[17], flushest[14], houseful[14], funhouse[14], stonefly[14], honestly[14], synfuels[14], youthens[14], foulness[11], sulfones[11], unhouses[11], nuthouse[11], setulous[8]

7 letter words

thyself[16], flushes[13], honesty[13], synfuel[13], youthen[13], unfussy[13], teflons[10], hostels[10], softens[10], hotness[10], sulfone[10], fulness[10], housels[10], foulest[10], hustles[10], lushest[10], sleuths[10], unhouse[10], tuneful[10], systole[10], toyless[10], telsons[7], ensouls[7], lotuses[7], solutes[7], tousles[7], tonuses[7], luteous[7], tenuous[7]

6 letter words

fleshy[15], foehns[12], felony[12], foleys[12], hoyles[12], honeys[12], hoseys[12], flossy[12], sloshy[12], hysons[12], flytes[12], ethyls[12], shelty[12], softly[12], hostly[12], shyest[12], synths[12], unholy[12], slushy[12], shoyus[12], flutey[12], outfly[12], fluyts[12], thusly[12], youths[12], felons[9], hosels[9], sheols[9], noshes[9], teflon[9], helots[9], hostel[9], hotels[9], tholes[9], soften[9], ethnos[9], honest[9], shotes[9], toshes[9], sloths[9], housel[9], fusels[9], lushes[9], houses[9], fluent[9], unfelt[9], flutes[9], hustle[9], sleuth[9], funest[9], foetus[9], flouts[9], founts[9], futons[9], shutes[9], tushes[9], tusseh[9], shunts[9], shouts[9], souths[9], useful[9], unshut[9], selsyn[9], stoney[9], slyest[9], styles[9], snouty[9], stylus[9], lesson[6], lentos[6], stolen[6], telson[6], stoles[6], onsets[6], setons[6], stenos[6], stones[6], ensoul[6], unless[6], louses[6], ousels[6], soleus[6], nouses[6], onuses[6], lunets[6], solute[6], tousle[6], tussle[6], sunset[6], unsets[6], setous[6], touses[6], snouts[6]

5 letter words

foehn[11], flesh[11], shelf[11], fohns[11], hefts[11], felon[8], floes[8], helos[8], holes[8], hosel[8], sheol[8], hones[8], hosen[8], shone[8], selfs[8], fosse[8], hoses[8], shoes[8], floss[8], slosh[8], helot[8], hotel[8], thole[8], often[8], felts[8], lefts[8], hents[8], shent[8], thens[8], ethos[8], shote[8], those[8], lofts[8], holts[8], sloth[8], fonts[8], fests[8], hests[8], enols[5], lenos[5], noels[5], loess[5], loses[5], sloes[5], soles[5], noses[5], sones[5], lento[5], stole[5], telos[5], toles[5], notes[5], onset[5], seton[5], steno[5], stone[5], tones[5], nests[5]