use '?' for JOKER (blank)

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

9 letter words

xenocryst[21]

7 letter words

cornets[9]

6 letter words

onyxes[16], oryxes[16], xyster[16], cortex[15], sexton[13], oxters[13], coneys[11], encyst[11], coyest[11], cytons[11], stoney[9], sentry[9], oyster[9], storey[9], toyers[9], censor[8], crones[8], recons[8], cornet[8], centos[8], contes[8], corset[8], coster[8], escort[8], rectos[8], scoter[8], sector[8], nestor[6], noters[6], stoner[6], tenors[6], tensor[6], toners[6], trones[6]

5 letter words

coxes[14], exons[12], oxter[12], sexto[12], coney[10], coyer[10], corny[10], crony[10], cosey[10], cyton[10], onery[8], nosey[8], syren[8], oyers[8], yores[8], toney[8], entry[8], toyer[8], tynes[8], stony[8], treys[8], tyers[8], tyres[8], ryots[8], story[8], stroy[8], troys[8], tyros[8], crone[7], recon[7], cones[7], scone[7], ceros[7], cores[7], corse[7], score[7], corns[7], scorn[7], cento[7], conte[7], oncet[7], recto[7], cents[7], scent[7], coset[7], cotes[7], escot[7], crest[7], torcs[7], senor[5], snore[5], noter[5], tenor[5], toner[5], trone[5], notes[5], onset[5], seton[5], steno[5], stone[5], tones[5], nerts[5], rents[5], stern[5], terns[5], roset[5], rotes[5], store[5], tores[5], torse[5], snort[5]

4 letter words

onyx[14], oryx[14], sexy[14], xyst[14], exon[11], oxen[11], oxes[11], next[11], sext[11], cony[9], cory[9], syce[9], sync[9], cosy[9], coys[9], scry[9], cyst[9], oyer[7], yore[7], snye[7], syne[7], yens[7], oyes[7], nosy[7], ryes[7], rosy[7], tyne[7], tony[7], trey[7], tyer[7], tyre[7], ryot[7], tory[7], troy[7], tyro[7], stey[7], stye[7], tyes[7], toys[7], cone[6], once[6], cero[6], core[6], corn[6], cons[6], recs[6], cors[6], orcs[6], rocs[6], cent[6], cote[6], torc[6], sect[6], cost[6], cots[6], scot[6], eons[4], noes[4], nose[4], ones[4], sone[4], erns[4], eros[4], ores[4], roes[4], rose[4], sore[4], sorn[4], note[4], tone[4], rent[4], tern[4], rote[4], tore[4], torn[4], nest[4], nets[4], sent[4], tens[4], toes[4], snot[4], tons[4], erst[4], rest[4], rets[4], tres[4], orts[4], rots[4], sort[4], tors[4]

3 letter words

con[5], eon[3], one[3]