use '?' for JOKER (blank)

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

11 letter words

quercitrons[21]

10 letter words

quercitron[20]

9 letter words

tricornes[11], coinsurer[11], recursion[11], countries[11], cretinous[11], neurotics[11], courtiers[11], construer[11], trouncers[11]

8 letter words

conquers[18], conquest[18], croquets[18], question[16], squinter[16], squirter[16], torquers[16], resorcin[10], tricorne[10], cointers[10], corniest[10], noticers[10], tricorns[10], coinsure[10], reincurs[10], couriers[10], neurotic[10], unerotic[10], courtier[10], trouncer[10], counties[10], citreous[10], outcries[10], construe[10], counters[10], recounts[10], trounces[10], ructions[10], crustier[10], recruits[10], currents[10], courters[10], introrse[8], routines[8], snoutier[8]

7 letter words

conquer[17], cinques[17], quinces[17], cirques[17], croquis[17], croquet[17], coquets[17], requins[15], torquer[15], inquest[15], quintes[15], querist[15], questor[15], quoters[15], roquets[15], torques[15], cornier[9], coiners[9], cronies[9], orceins[9], recoins[9], cirrose[9], corries[9], crosier[9], orrices[9], corners[9], scorner[9], cointer[9], noticer[9], tricorn[9], notices[9], section[9], cistern[9], cretins[9], erotics[9], cornets[9], cistron[9], citrons[9], cortins[9], rectors[9], coenuri[9], reincur[9], courier[9], cruiser[9], curries[9], courser[9], scourer[9], cirrous[9], cornute[9], counter[9], recount[9], trounce[9], ruction[9], recruit[9], current[9], courter[9], neustic[9], contuse[9], suction[9], curites[9], icterus[9], encrust[9], incrust[9], couters[9], croutes[9], scouter[9], citrous[9], ironers[7], norites[7], oestrin[7], orients[7], stonier[7], rioters[7], roister[7], snorter[7], urinose[7], insurer[7], ruiners[7], routine[7], runtier[7], nutsier[7], triunes[7], uniters[7], stourie[7], tenours[7], tonsure[7], nitrous[7], turions[7], rustier[7], returns[7], turners[7], rouster[7], routers[7], tourers[7], trouser[7]

6 letter words

coiner[8], orcein[8], recoin[8], corrie[8], orrice[8], corner[8], conies[8], cosine[8], icones[8], oscine[8], cosier[8], censor[8], crones[8], recons[8], orcins[8], criers[8], ricers[8], corers[8], crores[8], scorer[8], noetic[8], notice[8], cretin[8], erotic[8], cornet[8], citron[8], cortin[8], rector[8], incest[8], insect[8], nicest[8], cestoi[8], centos[8], contes[8], tocsin[8], tonics[8], citers[8], recits[8], steric[8], trices[8], ironer[6], irones[6], nosier[6], senior[6], rinser[6], rosier[6], snorer[6], sorner[6], norite[6], orient[6], tonier[6], rioter[6], retorn[6], estrin[6], inerts[6], insert[6], inters[6], niters[6], nitres[6]