use '?' for JOKER (blank)

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

11 letter words

uncountable[15]

9 letter words

countable[13], untunable[11]

8 letter words

bluecoat[12], butanone[10], nanotube[10]

7 letter words

alencon[9], notable[9], lactone[9], connate[9], unclean[9], nucleon[9], abluent[9], tunable[9], butanol[9], noctule[9], couteau[9], annulet[7], tonneau[7]

6 letter words

beacon[10], cablet[10], cobalt[10], boucle[10], bounce[10], cobnut[10], cannel[8], ancone[8], cantle[8], cental[8], lancet[8], bannet[8], boatel[8], lobate[8], oblate[8], locate[8], octane[8], cannot[8], canton[8], bonnet[8], nocent[8], nebula[8], unable[8], unbale[8], cuneal[8], lacune[8], launce[8], unlace[8], nuance[8], nuncle[8], butane[8], unbelt[8], lucent[8], unbent[8], coteau[8], toucan[8], unbolt[8], tubule[8], uncute[8], etalon[6], tolane[6], nounal[6], eluant[6], lunate[6], tunnel[6], untune[6]

5 letter words

cable[9], coble[9], bacon[9], banco[9], bunco[9], clean[7], lance[7], nance[7], beano[7], canoe[7], ocean[7], belon[7], noble[7], clone[7], ancon[7], canon[7], bonne[7], nonce[7], blate[7], bleat[7], table[7], cleat[7], eclat[7], enact[7], blent[7], bloat[7], octal[7], botel[7], telco[7], baton[7], canto[7], cotan[7], octan[7], bento[7], beton[7], cento[7], conte[7], oncet[7], uncle[7], unban[7], boule[7], ounce[7], beaut[7], tubae[7], acute[7], tubal[7], bluet[7], butle[7], culet[7], tabun[7], centu[7], blunt[7], about[7], buteo[7], clout[7], count[7], uncut[7], alone[5], anole[5], laten[5], leant[5], anent[5], atone[5], oaten[5], notal[5], talon[5], tolan[5], tonal[5], lento[5], nonet[5], tenon[5], tonne[5], ulnae[5], annul[5], lutea[5], lunet[5], unlet[5], tauon[5]

4 letter words

bloc[8], able[6], bale[6], blae[6], alec[6], lace[6], bane[6], bean[6], nabe[6], acne[6], cane[6], clan[6], bola[6], calo[6], coal[6], cola[6], loca[6], bole[6], lobe[6], cole[6], bone[6], ebon[6], cone[6], once[6], clon[6], conn[6], abet[6], bate[6], beat[6], beta[6], cate[6], tace[6], blat[6], talc[6], belt[6], blet[6], celt[6], elan[4], lane[4], lean[4], aloe[4], olea[4], aeon[4], loan[4], enol[4], leno[4], lone[4], noel[4], anon[4], nona[4], neon[4], none[4], late[4], tael[4], tale[4], teal[4], tela[4]