use '?' for JOKER (blank)

From letters W, E, S, T, E, R, N, I, S, A, T, I, O, N, S  I made following words

15 letter words

westernisations[18]

14 letter words

westernisation[17]

12 letter words

wintrinesses[15], intersession[12], stationeries[12]

11 letter words

tawninesses[14], intertwines[14], wittinesses[14], raininesses[11], antistories[11], transitions[11], nattinesses[11], tartinesses[11]

10 letter words

swanneries[13], warinesses[13], wirinesses[13], wornnesses[13], earwitness[13], wateriness[13], wintriness[13], stonewares[13], sweatiness[13], waitresses[13], witnessers[13], intertwine[13], winteriest[13], airinesses[10], ironnesses[10], seriations[10], serotinies[10], ornateness[10], tensioners[10], insertions[10], tininesses[10], sensations[10], artinesses[10], serosities[10], assertions[10], itinerates[10], entertains[10], tenantries[10], itinerants[10], orientates[10], iterations[10], stentorian[10], retentions[10], nitrations[10], transition[10], tretinoins[10], intestines[10], reinstates[10], tanistries[10], transients[10], internists[10], restations[10], stationers[10], striations[10], rottenness[10], nonartists[10], strontians[10], titanesses[10], snottiness[10], tartnesses[10], antistress[10], resistants[10], straitness[10]

9 letter words

weariness[12], wannesses[12], newsiness[12], nownesses[12], snowiness[12], rawnesses[12], stoneware[12], wantoners[12], tawniness[12], wasteries[12], wisterias[12], witnesser[12], witnesses[12], swartness[12], wateriest[12], wintriest[12], toweriest[12], sweatiest[12], wittiness[12], strawiest[12], wristiest[12], anserines[9], raininess[9], sirenians[9], noisiness[9], reseasons[9], seasoners[9], antinoise[9], tanneries[9], seriation[9], anointers[9], reanoints[9], tensioner[9], insertion[9], antisense[9], insensate[9], einsteins[9], sensation[9], arsenites[9], irateness[9], resinates[9], stearines[9], teariness[9], inertness[9], ostiaries[9], earstones[9], resonates[9], assertion[9], senoritas[9], serotines[9], resonants[9], sanitises[9], sensitise[9], antsiness[9], nastiness[9], essonites[9], stoniness[9], satirises[9], assenters[9], sarsenets[9], artsiness[9], insisters[9], sternness[9], assentors[9], starnoses[9], arsonists[9], sternsons[9], itinerate[9], entertain[9], itinerant[9], orientate[9], iteration[9], retention[9], nitration[9], tretinoin[9], sententia[9], intestine[9], intonates[9], reinstate[9], enteritis[9], interties[9], retinites[9], instanter[9], intranets[9], transient[9], internist[9], restation[9], stationer[9], tenorites[9], striation[9], nonartist[9], strontian[9], satieties[9], anisettes[9], tetanises[9], tensities[9], setenants[9], nattiness[9], stannites[9], intensest[9], sentients[9], insistent[9], noisettes[9], teosintes[9], tinstones[9], sestertia[9], treatises[9], resistant[9], straitens[9], tartiness[9], insetters[9], interests[9], sternites[9], triteness[9], strontias[9], tenorists[9], tastiness[9], testiness[9], tressiest[9], satirists[9], sitarists[9]

8 letter words

anserine[8], sirenian[8], raisonne[8], inosines[8], airiness[8], ensnares[8], nearness[8], rennases[8], insnares[8], reseason[8], seasoner[8], erasions[8], sensoria[8]