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From letters G, L, U, C, O, C, O, R, T, I, C, O, I, D, S  I made following words

15 letter words

glucocorticoids[23]

14 letter words

glucocorticoid[22]

10 letter words

glucosidic[16], sociologic[15], corticoids[15], coloristic[14], colicroots[14]

9 letter words

corticoid[14], colicroot[13], scoliotic[13], discolour[12], liturgics[12], solicitor[11], orologist[10], utilidors[10], urologist[10]

8 letter words

coccoids[15], scirocco[14], codicils[13], cricoids[13], dicrotic[13], culicids[13], glucosic[13], clitoric[12], circuits[12], discolor[11], lordotic[11], logistic[11], urologic[11], dioicous[11], sciuroid[11], liturgic[11], outscold[11], clitoris[10], coistril[10], colorist[10], cortisol[10], couloirs[10], oologist[9], siluroid[9], glorious[9], dolorous[9], utilidor[9], dilutors[9], goitrous[9], outdoors[9]

7 letter words

coccoid[14], coccids[14], coccous[13], codicil[12], cricoid[12], culicid[12], sirocco[11], rococos[11], colitic[11], clitics[11], critics[11], circuit[11], occults[11], oologic[10], cirsoid[10], cogitos[10], doctors[10], colugos[10], sciurid[10], couldst[10], ridgils[9], oolitic[9], diglots[9], colitis[9], solicit[9], soritic[9], lictors[9], octrois[9], couloir[9], duologs[9], colours[9], oculist[9], citrous[9], girosol[8], ologist[8], strigil[8], disroot[8], toroids[8], silurid[8], dolours[8], odorous[8], dilutor[8], outdoor[8], toluids[8], outsold[8], outrigs[8], rosolio[7], troilus[7], riotous[7]

6 letter words

coccid[13], coccus[12], rococo[10], colics[10], crisic[10], clitic[10], citric[10], critic[10], circus[10], crocus[10], occurs[10], succor[10], cultic[10], occult[10], stucco[10], logics[9], cologs[9], corgis[9], cogito[9], doctor[9], dicots[9], colugo[9], clouds[9], durocs[9], ridgil[8], colors[8], diglot[8], lictor[8], octroi[8], digits[8], cloots[8], torics[8], duolog[8], colour[8], guilds[8], coulis[8], gourds[8], curios[8], clours[8], toluic[8], turgid[8], coitus[8], clouts[8], locust[8], citrus[8], rictus[8], rustic[8], courts[8], solidi[7], sigloi[7], igloos[7], isolog[7], dolors[7], drools[7], toroid[7], distil[7], idiots[7], stolid[7], ootids[7], droits[7], griots[7], trigos[7], dolour[7], iodous[7], odious[7], guiros[7], odours[7], toluid[7], outrig[7], guilts[7], studio[7], glouts[7], stroud[7], grouts[7], triols[6], suitor[6], torous[6]

5 letter words

cocci[11], colic[9], croci[9], cisco[9], iodic[8], dolci[8], logic[8], colog[8], corgi[8], orgic[8], disci[8], disco[8], sodic[8], clods[8], colds[8], scold[8], clogs[8], rigid[7], color[7], gilds[7], golds[7], coils[7], igloo[6], logoi[6], dolor[6], drool[6], sigil[6], diols[6]