use '?' for JOKER (blank)

From letters C, O, M, M, E, N, C, E, M, E, N, T, S  I made following words

13 letter words

commencements[23]

12 letter words

commencement[22]

9 letter words

commences[17], mementoes[13]

8 letter words

commence[16], comments[14], ensconce[12], mementos[12], concents[12], connects[12], contemns[12], sentence[10], centones[10]

7 letter words

comment[13], memento[11], concent[11], connect[11], contemn[11], cements[11], moments[11], mentees[9], cenotes[9], tonemes[9], consent[9]

6 letter words

emcees[10], sememe[10], sconce[10], socmen[10], cement[10], moment[10], emmets[10], comets[10], comtes[10], eocene[8], nonces[8], mentee[8], cenote[8], toneme[8], nocent[8], esteem[8], mestee[8], emotes[8], centos[8], contes[8], montes[8], sennet[6], nonets[6], sonnet[6], tenons[6], tonnes[6]

5 letter words

emcee[9], memes[9], cosec[9], secco[9], comes[9], memos[9], momes[9], emmet[9], comet[9], comte[9], nonce[7], nomen[7], cense[7], scene[7], mense[7], mesne[7], neems[7], semen[7], cones[7], scone[7], meson[7], nomes[7], omens[7], conns[7], emote[7], cento[7], conte[7], oncet[7], monte[7], cetes[7], meets[7], metes[7], teems[7], cents[7], scent[7], coset[7], cotes[7], escot[7], moste[7], motes[7], smote[7], tomes[7], nenes[5], neons[5], nones[5], nonet[5], tenon[5], tonne[5], sente[5], teens[5], tense[5], notes[5], onset[5], seton[5], steno[5], stone[5], tones[5]

4 letter words

meme[8], come[8], memo[8], mome[8], mems[8], mocs[8], moms[8], neem[6], cone[6], once[6], meno[6], nome[6], omen[6], conn[6], cees[6], emes[6], seem[6], seme[6], some[6], cons[6], mons[6], noms[6], cete[6], meet[6], mete[6], teem[6], cent[6], cote[6], mote[6], tome[6], sect[6], stem[6], cost[6], cots[6], scot[6], most[6], mots[6], toms[6], nene[4], neon[4], none[4], esne[4], seen[4], sene[4], eons[4], noes[4], nose[4], ones[4], sone[4], teen[4], note[4], tone[4], tees[4], nest[4], nets[4], sent[4], tens[4], toes[4], snot[4], tons[4]

3 letter words

mem[7], moc[7], mom[7], cee[5], eme[5], men[5], con[5], mon[5], nom[5], sec[5], ems[5], cos[5], mos[5], oms[5], som[5], met[5], cot[5], mot[5], nee[3], eon[3], one[3], see[3], ens[3], sen[3], oes[3], ose[3], nos[3], ons[3], son[3], tee[3], net[3], ten[3], toe[3]