Design an BCH(10,6) which utilises unusable numbers. Assume that we can either drop the double error correction requirement for those unusable numbers, or make the code length longer. You must explain...

Design an BCH(10,6) which utilises unusable numbers. Assume that we can either drop the double error correction requirement for those unusable numbers, or make the code length longer. You must explain how the coding method of design an BCH(10,6) works, why it works, and what both the gains and the drawbacks are.