use '?' for JOKER (blank)

From letters B, U, R, E, A, U, C, R, A, T, E, S, E  I made following words

13 letter words

bureaucratese[17]

11 letter words

bureaucrats[15]

10 letter words

casebearer[14], crabeaters[14], cerebrates[14], bureaucrat[14]

9 letter words

crabeater[13], cerebrate[13], acerbates[13], carburets[13], cubatures[13], recreates[11], arcatures[11], creatures[11]

8 letter words

acerbate[12], abreacts[12], bearcats[12], cabarets[12], cabresta[12], acerbest[12], berceuse[12], carburet[12], suberect[12], cubature[12], subacute[12], recreate[10], rebaters[10], caterers[10], recrates[10], retraces[10], terraces[10], erecters[10], reerects[10], secreter[10], caesurae[10], ecraseur[10], resecure[10], arcature[10], creature[10], secateur[10], arrestee[8], austerer[8], treasure[8]

7 letter words

acerber[11], cerebra[11], bracers[11], abreact[11], bearcat[11], cabaret[11], because[11], rubaces[11], subrace[11], becurse[11], curbers[11], becrust[11], becurst[11], aucubas[11], bearers[9], careers[9], creaser[9], acerate[9], rebater[9], caterer[9], recrate[9], retrace[9], terrace[9], erecter[9], reerect[9], caseate[9], abaters[9], abreast[9], carates[9], beaters[9], berates[9], rebates[9], cerates[9], creates[9], ecartes[9], secrete[9], barrets[9], barters[9], carters[9], craters[9], tracers[9], subarea[9], caesura[9], cesurae[9], curaras[9], bursera[9], curares[9], rescuer[9], securer[9], arcuate[9], arbutes[9], bursate[9], curates[9], burster[9], bureaus[9], arbutus[9], aerates[7], erratas[7], retears[7], serrate[7], tearers[7], steerer[7], erasure[7], aureate[7], austere[7], ureters[7], auteurs[7]

6 letter words

bracer[10], barcas[10], scarab[10], braces[10], cabers[10], rebecs[10], bracts[10], rubace[10], curber[10], abacus[10], cubers[10], bearer[8], career[8], abaser[8], arecas[8], caesar[8], crease[8], creese[8], barres[8], rebars[8], carers[8], racers[8], scarer[8], abater[8], carate[8], beater[8], berate[8], rebate[8], cerate[8], create[8], ecarte[8], barret[8], barter[8], carter[8], crater[8], tracer[8], abates[8], rabats[8], carats[8], barest[8], baster[8], breast[8], tabers[8], carets[8], cartes[8], caster[8], caters[8], crates[8], reacts[8], recast[8], traces[8], berets[8], certes[8], erects[8], resect[8], secret[8], terces[8], curara[8], curare[8], acarus[8], abuser[8], bursae[8], causer[8], cesura[8], saucer[8], eraser[6], searer[6], aerate[6], errata[6], retear[6], tearer[6], terrae[6], reatas[6], aretes[6], easter[6], eaters[6], reseat[6], seater[6], teaser[6], arrest[6], rarest[6], raster[6], raters[6], starer[6], tarres[6], terras[6], rester[6], terser[6], reseau[6], urease[6]