use '?' for JOKER (blank)

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

15 letter words

recommencements[25]

14 letter words

recommencement[24]

13 letter words

commencements[23]

12 letter words

commencement[22]

11 letter words

recommences[19]

10 letter words

recommence[18], commencers[18], commenters[16], concenters[14], connecters[14], reconnects[14], contemners[14], resentence[12], mesenteron[12]

9 letter words

commencer[17], commences[17], commerces[17], commenter[15], concenter[13], connecter[13], reconnect[13], contemner[13], mementoes[13], cementers[13], cerements[13], recements[13], ectomeres[13], concretes[13], sentencer[11], consenter[11], cretonnes[11], nonsecret[11], sonneteer[9]

8 letter words

commence[16], commerce[16], comments[14], ensconce[12], mesomere[12], concerns[12], cementer[12], cerement[12], recement[12], ectomere[12], concrete[12], mementos[12], concents[12], connects[12], contemns[12], crescent[12], coerects[12], concerts[12], onscreen[10], cretonne[10], sentence[10], centones[10], centners[10], enterons[8], tenoners[8]

7 letter words

comment[13], concern[11], coerces[11], memento[11], concent[11], connect[11], contemn[11], coerect[11], concert[11], cements[11], moments[11], cermets[11], stemmer[11], encores[9], necrose[9], moreens[9], conners[9], centner[9], mentees[9], cenotes[9], tonemes[9], consent[9], secrete[9], meeters[9], remeets[9], teemers[9], centers[9], centres[9], tenrecs[9], emoters[9], meteors[9], remotes[9], cornets[9], mentors[9], monster[9], enteron[7], tenoner[7], entrees[7], retenes[7], teeners[7], rennets[7], tenners[7], estrone[7], tonners[7]

6 letter words

mermen[10], coerce[10], emcees[10], sememe[10], sconce[10], socmen[10], recces[10], cremes[10], merces[10], emmers[10], soccer[10], comers[10], momser[10], cement[10], moment[10], cermet[10], emmets[10], comets[10], comtes[10], eocene[8], encore[8], moreen[8], conner[8], nonces[8], creese[8], emeers[8], seemer[8], censer[8], screen[8], secern[8], censor[8], crones[8], recons[8], sermon[8], mentee[8], cenote[8], toneme[8], nocent[8], meeter[8], remeet[8], teemer[8], center[8], centre[8], recent[8], tenrec[8], emoter[8], meteor[8], remote[8], cornet[8], mentor[8], esteem[8], mestee[8], emotes[8], centos[8], contes[8], montes[8], certes[8], erects[8], resect[8], secret[8], terces[8], merest[8], meters[8], metres[8], retems[8], corset[8], coster[8], escort[8], rectos[8], scoter[8], sector[8], metros[8], reseen[6], serene[6], entree[6], eterne[6], retene[6], teener[6], rennet[6], tenner[6], tonner[6], sennet[6], nonets[6], sonnet[6], tenons[6], tonnes[6], enters[6], nester[6], renest[6], rentes[6], resent[6], tenser[6], ternes[6], treens[6], stereo[6], nestor[6], noters[6], stoner[6]