use '?' for JOKER (blank)

From letters B, A, C, K, B, O, N, E, S  I made following words

9 letter words

backbones[19]

8 letter words

backbone[18]

7 letter words

beckons[15], beacons[11]

6 letter words

beckon[14], kebabs[14], kabobs[14], kebobs[14], cabobs[12], beacon[10], nabobs[10], bacons[10], bancos[10], beanos[8], canoes[8], oceans[8]

5 letter words

kebab[13], kabob[13], kebob[13], backs[13], becks[13], bocks[13], cabob[11], bakes[11], beaks[11], cakes[11], banks[11], snack[11], necks[11], sneck[11], cobbs[11], cokes[11], bonks[11], knobs[11], conks[11], nocks[11], nabob[9], bacon[9], banco[9], oaken[9], abbes[9], babes[9], kanes[9], skean[9], snake[9], sneak[9], kaons[9], koans[9], kenos[9], beano[7], canoe[7], ocean[7], banes[7], beans[7], nabes[7], acnes[7], canes[7], scena[7], canso[7], bones[7], ebons[7], cones[7], scone[7], aeons[5]

4 letter words

back[12], beck[12], bock[12], bake[10], beak[10], cake[10], bank[10], neck[10], cobb[10], coke[10], bonk[10], knob[10], conk[10], nock[10], bask[10], kabs[10], cask[10], sack[10], bosk[10], kobs[10], sock[10], abbe[8], babe[8], kane[8], kaon[8], koan[8], keno[8], cabs[8], scab[8], ebbs[8], kaes[8], keas[8], sake[8], sank[8], kens[8], bobs[8], cobs[8], koas[8], oaks[8], okas[8], soak[8], okes[8], soke[8], bane[6], bean[6], nabe[6], acne[6], cane[6], bone[6], ebon[6], cone[6], once[6], base[6], sabe[6], aces[6], case[6], bans[6], nabs[6], cans[6], scan[6], bens[6], nebs[6], abos[6], boas[6], obas[6], soba[6], ocas[6], soca[6], obes[6], nobs[6], snob[6], cons[6], aeon[4], anes[4], sane[4], naos[4], eons[4], noes[4], nose[4], ones[4], sone[4]

3 letter words

kab[9], kob[9], cab[7], ebb[7], kae[7], kea[7], ken[7], bob[7], cob[7], koa[7], oak[7], oka[7], oke[7], ask[7], kas[7], ska[7], kos[7], ace[5], ban[5], nab[5], can[5], ben[5], neb[5], abo[5], boa[5], oba[5], oca[5], obe[5], nob[5], con[5], abs[5], bas[5], sab[5], sac[5], bes[5], sec[5], bos[5], sob[5], cos[5], ane[3], nae[3], eon[3], one[3], sae[3], sea[3], ens[3], sen[3], oes[3], ose[3], nos[3], ons[3], son[3]

2 letter words

ab[4], ba[4], ae[2]