In the 3 tier securitization structure there would be Senior tranch, mezanine tranch & equity tranch. Suppose there are enough cash-flow received (say A) from the underline security to pay off the interest to Senior (B) & Mezanine tranch (C) holder & remaining amount of (A-B-C) say K, So, here my question is the remaining amount of K would go first to equity holder or it would be transferred to trust account?? or it is the other way that K will go to equity first then the excess amount remained after paying the equity would go to the trust account?