Study the following information carefully and answer the question given below.

Nine persons A, B, C, D, E, F, G, H and I are sitting around a circular table each facing outside. A is third to the left of H and is second to the right of C. D is second to the left of F. D is an immediate neighbour of H. I is on immediate left of B. G is not an immediate neighbour of A.

How many persons are sitting between I and F?