use '?' for JOKER (blank)

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

10 letter words

quercetins[20]

9 letter words

quercetin[19], quiescent[19], ceintures[11], centuries[11], enuretics[11]

8 letter words

quercine[18], enquires[16], squireen[16], quietens[16], quieters[16], requites[16], squinter[16], enterics[10], enticers[10], secretin[10], insecure[10], sinecure[10], ceinture[10], enuretic[10], cerusite[10], cutesier[10], eucrites[10], esurient[8], retinues[8], reunites[8]

7 letter words

cinques[17], quinces[17], cirques[17], enquire[15], equines[15], esquire[15], queries[15], requins[15], quieten[15], quieter[15], requite[15], equites[15], sequent[15], inquest[15], quintes[15], quester[15], request[15], querist[15], sincere[9], enteric[9], enticer[9], entices[9], cerites[9], recites[9], tierces[9], centers[9], centres[9], tenrecs[9], cistern[9], cretins[9], censure[9], eucrite[9], cutesie[9], neustic[9], curites[9], icterus[9], encrust[9], incrust[9], entires[7], entries[7], retines[7], trienes[7], retinue[7], reunite[7], uterine[7], neuters[7], retunes[7], tenures[7], tureens[7], nutsier[7], triunes[7], uniters[7]

6 letter words

cinque[16], quince[16], cirque[16], equine[14], requin[14], queens[14], sequin[14], queers[14], quires[14], risque[14], squire[14], querns[14], quinte[14], quiets[14], quints[14], squint[14], quirts[14], squirt[14], nieces[8], cerise[8], censer[8], screen[8], secern[8], entice[8], cerite[8], recite[8], tierce[8], center[8], centre[8], recent[8], tenrec[8], cretin[8], incest[8], insect[8], nicest[8], certes[8], erects[8], resect[8], secret[8], terces[8], citers[8], recits[8], steric[8], trices[8], incuse[8], cereus[8], ceruse[8], recuse[8], rescue[8], secure[8], cruise[8], curies[8], incurs[8], curite[8], uretic[8], cuties[8], cutins[8], tunics[8], cruets[8], cruset[8], curets[8], eructs[8], rectus[8], recuts[8], truces[8], citrus[8], rictus[8], rustic[8], nereis[6], seiner[6], serein[6], serine[6], entire[6], retine[6], triene[6], resite[6], reties[6], enters[6], nester[6], renest[6], rentes[6], resent[6], tenser[6], ternes[6], treens[6], estrin[6], inerts[6], insert[6], inters[6], niters[6], nitres[6], sinter[6], triens[6], trines[6], ensure[6], enures[6], insure[6], inures[6], rusine[6], urines[6], ursine[6], neuter[6], retune[6], tenure[6], tureen[6], triune[6], uniter[6], tenues[6], tenuis[6], unites[6], unties[6], retuse[6], suiter[6], tuners[6], unrest[6], rutins[6]

5 letter words

niece[7], nicer[7], cense[7], scene[7], cines[7], since[7]