use '?' for JOKER (blank)

From letters B, A, S, T, A, R, D, I, Z, A, T, I, O, N, S  I made following words

15 letter words

bastardizations[26]

14 letter words

bastardization[25]

10 letter words

brittanias[12], radiations[11], traditions[11], distraints[11], satiations[10], striations[10]

9 letter words

bartizans[19], tsaritzas[17], obsidians[12], sarabands[12], bastinado[12], abradants[12], oribatids[12], anabiosis[11], abrasions[11], bartisans[11], brittania[11], abattoirs[11], botanists[11], radiation[10], distrains[10], tradition[10], distraint[10], sanitaria[9], sanatoria[9], sanitoria[9], intarsias[9], natatoria[9], satiation[9], striation[9], strontias[9]

8 letter words

bartizan[18], tzarinas[16], triazins[16], tsaritza[16], tzarists[16], obsidian[11], saraband[11], bandoras[11], inboards[11], sandbars[11], abradant[11], oribatid[11], tabanids[11], banditos[11], bastards[11], banditti[11], abrasion[10], anabasis[10], abrosias[10], antibias[10], bartisan[10], airboats[10], taborins[10], abstains[10], sabatons[10], antiboss[10], bastions[10], baristas[10], abattoir[10], botanist[10], bistorts[10], sardanas[9], sadirons[9], antidora[9], radiants[9], distrain[9], diatrons[9], intrados[9], distains[9], diarists[9], sarodist[9], sistroid[9], distrait[9], tostadas[9], distorts[9], intarsia[8], artisans[8], tsarinas[8], arsonist[8], ironists[8], antiriot[8], titanias[8], ostinati[8], tantaras[8], tarantas[8], tartanas[8], arnattos[8], strontia[8], introits[8], satanist[8], stations[8], satirist[8], sitarist[8], transits[8]

7 letter words

banzais[17], bazaars[17], diazins[16], bandora[10], inboard[10], basidia[10], indabas[10], sandbar[10], ribands[10], robands[10], disbars[10], adsorbs[10], tabanid[10], bandito[10], bandits[10], bastard[10], tabards[10], tidbits[10], abrosia[9], abasias[9], abiosis[9], basions[9], isobars[9], airboat[9], taborin[9], abstain[9], sabaton[9], bastion[9], bonitas[9], obtains[9], biotins[9], barista[9], brisant[9], abators[9], rabatos[9], bistros[9], abattis[9], bistort[9], sardana[8], radians[8], inroads[8], ordains[8], sadiron[8], sordini[8], radiant[8], diatron[8], dinitro[8], distain[8], diarist[8], nitrids[8], stadias[8], strands[8], distant[8], tostada[8], distort[8], raisins[7], antiair[7], atonias[7], antiars[7], artisan[7], tsarina[7], aroints[7], rations[7], ironist[7], astasia[7], isatins[7], sonatas[7], sataras[7], aristas[7], tarsias[7], instars[7], santirs[7], strains[7], aorists[7], aristos[7], satoris[7], titania[7], tantara[7], tartana[7], arnatto[7], introit[7], attains[7], titians[7], anattos[7], station[7], striata[7], rattans[7], tantras[7], tartans[7], transit[7], attorns[7], rattons[7], intorts[7], tritons[7], statins[7], tanists[7], tatsois[7], stotins[7], stratas[7], artists[7], straits[7], tsarist[7], stators[7]