use '?' for JOKER (blank)

From letters V, I, O, S, T, E, R, O, L  I made following words

9 letter words

overtoils[12], viosterol[12]

8 letter words

overtoil[11], oestriol[8]

7 letter words

overlit[10], violets[10], revolts[10], orioles[7], oolites[7], ostiole[7], stoolie[7], estriol[7], loiters[7], toilers[7], sootier[7], looters[7], retools[7], rootles[7], toolers[7]

6 letter words

olives[9], voiles[9], ervils[9], livers[9], livres[9], silver[9], sliver[9], vireos[9], lovers[9], solver[9], violet[9], revolt[9], livest[9], vilest[9], soviet[9], voltes[9], volost[9], rivets[9], stiver[9], strive[9], verist[9], stover[9], strove[9], troves[9], voters[9], oriole[6], looies[6], lories[6], oilers[6], oriels[6], reoils[6], looser[6], oolite[6], loiter[6], toiler[6], looter[6], retool[6], rootle[6], tooler[6], toiles[6], otiose[6], lister[6], liters[6], litres[6], relist[6], tilers[6], sortie[6], tories[6], triose[6], ostler[6], sterol[6], triols[6], torose[6]

5 letter words

olive[8], voile[8], ovoli[8], ervil[8], liver[8], livre[8], viler[8], vireo[8], lover[8], evils[8], levis[8], lives[8], veils[8], loves[8], solve[8], voles[8], viols[8], rives[8], siver[8], viers[8], vires[8], virls[8], overs[8], roves[8], servo[8], verso[8], visor[8], volte[8], volti[8], rivet[8], overt[8], trove[8], voter[8], stove[8], votes[8], volts[8], verst[8], verts[8], looie[5], oiler[5], oriel[5], reoil[5], oorie[5], solei[5], loose[5], oleos[5], olios[5], liers[5], riels[5], riles[5], slier[5], osier[5], lores[5], loser[5], orles[5], roles[5], sorel[5], loris[5], roils[5], roose[5], teloi[5], toile[5], liter[5], litre[5], relit[5], tiler[5], lirot[5], triol[5], islet[5], istle[5], stile[5], tiles[5], stole[5], telos[5], toles[5], toils[5], loots[5], lotos[5], sotol[5], stool[5], tools[5], resit[5], rites[5], tiers[5], tires[5], tries[5], tirls[5], roset[5], rotes[5], store[5], tores[5], torse[5], riots[5], rotis[5], tiros[5], torsi[5], trios[5], trois[5], rotls[5], roost[5], roots[5], rotos[5], toros[5], torso[5]

4 letter words

oleo[4], olio[4], lier[4], lire[4], riel[4], rile[4], lore[4], orle[4], role[4], roil[4], isle[4], leis[4], lies[4], lose[4], oles[4], sloe[4], sole[4], oils[4], silo[4], soil[4], soli[4], loos[4], solo[4], ires[4]