use '?' for JOKER (blank)

From letters I, N, C, O, N, V, I, N, C, I, B, L, E  I made following words

13 letter words

inconvincible[22]

10 letter words

invincible[17]

8 letter words

vincible[15], convince[15], libeccio[14], olivinic[13], colicine[12]

7 letter words

ecbolic[13], incivil[12], invoice[12], connive[12], binocle[11], colicin[11], olivine[10], incline[9], coniine[9]

6 letter words

boccie[12], bovine[11], novice[11], cloven[11], cilice[10], icicle[10], clinic[10], bionic[10], niobic[10], iconic[10], clonic[10], violin[9], cineol[8], enolic[8], bonnie[8], conine[8], online[6]

5 letter words

civic[12], bocce[11], bocci[11], civie[10], civil[10], vinic[10], voice[10], clove[10], coven[10], covin[10], coble[9], cibol[9], colic[9], conic[9], levin[8], liven[8], venin[8], olive[8], voile[8], envoi[8], ovine[8], novel[8], ceili[7], cline[7], blini[7], benni[7], obeli[7], oleic[7], ionic[7], belon[7], noble[7], clone[7], colin[7], nicol[7], bonne[7], nonce[7], conin[7], linen[5], linin[5], eloin[5], olein[5], inion[5], ninon[5]

4 letter words

vibe[9], vice[9], cove[9], bice[8], bloc[8], evil[7], live[7], veil[7], vile[7], nevi[7], vein[7], vine[7], levo[7], love[7], vole[7], viol[7], oven[7], vino[7], bile[6], ceil[6], lice[6], bine[6], cine[6], nice[6], blin[6], bole[6], lobe[6], cole[6], boil[6], coil[6], loci[6], bone[6], ebon[6], cone[6], once[6], cion[6], coin[6], coni[6], icon[6], clon[6], conn[6], lien[4], line[4], nine[4], linn[4], enol[4], leno[4], lone[4], noel[4], lino[4], lion[4], loin[4], noil[4], neon[4], none[4]

3 letter words

cob[7], vie[6], lev[6], voe[6], ice[5], bel[5], cel[5], lib[5], ben[5], neb[5], bin[5], nib[5], obe[5], bio[5], obi[5], lob[5], col[5], nob[5], con[5], lei[3], lie[3], lin[3], nil[3], inn[3], ole[3], oil[3], eon[3], one[3], ion[3]

2 letter words

be[4], bi[4], bo[4], el[2], li[2], en[2], ne[2], in[2], oe[2], oi[2], lo[2], no[2], on[2]