Eight boxes D, E, R, K, F, A, B and O are placed on shelves not necessarily in the same order. The box which is placed at the bottom is numbered as box 1 and its above is numbered 2 and so on topmost box numbered as box 8.

F is placed two placed below E. There are three boxes are placed between F and O. R is placed immediately below O. B is not placed at the bottom. K is immediately below E. D is below A. There are two boxes between B and F.