use '?' for JOKER (blank)

From letters O, V, E, R, C, H, A, R, G, E, S  I made following words

11 letter words

overcharges[20]

10 letter words

overcharge[19], overarches[18]

9 letter words

overreach[17], recharges[15], coverages[15], overhears[15], horserace[14], racehorse[14]

8 letter words

overarch[16], recharge[14], chargers[14], coverage[14], overhear[14], overrash[14], hoverers[14], reachers[13], research[13], searcher[13], horsecar[13], coherers[13], coverers[13], recovers[13], gheraoes[12], overages[12]

7 letter words

chevres[15], charger[13], chegoes[13], charges[13], hoverer[13], heavers[13], reshave[13], ochreae[12], reacher[12], coherer[12], reaches[12], choreas[12], oraches[12], roaches[12], cheeros[12], coheres[12], echoers[12], rechose[12], archers[12], crasher[12], charros[12], coverer[12], recover[12], corvees[12], carvers[12], cravers[12], overage[11], greaves[11], gravers[11], vergers[11], cargoes[10], corsage[10], socager[10], hearers[10], rehears[10], shearer[10], grocers[10], hoarser[10], oversea[10], reavers[10], savorer[10], serovar[10], reverso[10], acerose[9], careers[9], creaser[9], coarser[9], rescore[9], greaser[8], regears[8]

6 letter words

chevre[14], havocs[14], chegoe[12], charge[12], heaver[12], heaves[12], sheave[12], havers[12], shaver[12], hovers[12], shover[12], shrove[12], chorea[11], ochrea[11], orache[11], cheero[11], cohere[11], echoer[11], reecho[11], archer[11], charro[11], echoes[11], arches[11], chares[11], chaser[11], eschar[11], search[11], cheers[11], creesh[11], chores[11], cosher[11], ochers[11], ochres[11], charrs[11], corvee[11], carver[11], craver[11], carves[11], cavers[11], craves[11], corves[11], covers[11], gherao[10], gasher[10], gerahs[10], greave[10], regave[10], graver[10], verger[10], graves[10], verges[10], groves[10], hearer[9], rehear[9], grocer[9], socage[9], cagers[9], graces[9], haeres[9], hearse[9], cargos[9], ahorse[9], ashore[9], hoarse[9], heroes[9], reshoe[9], rasher[9], sharer[9], reaver[9], averse[9], reaves[9], soever[9], ravers[9], revers[9], server[9], verser[9], rovers[9], ocreae[8], career[8], crease[8], coarse[8], carers[8], racers[8], scarer[8], corers[8], crores[8], scorer[8], regear[7], agrees[7], eagers[7], eagres[7], grease[7], ragees[7], serger[7], rogers[7], eraser[6], searer[6], soarer[6], rerose[6]

5 letter words

chare[10], reach[10], cheer[10], orach[10], roach[10], chore[10], ocher[10], ochre[10], charr[10], aches[10], gerah[9], cager[8], grace[8], cargo[8], cages[8], ocrea[7], carer[7], racer[7], corer[7], crore[7], cease[7], agree[6], eager[6], eagre[6], ragee[6], roger[6]