8 persons namely A, B, C, D, E, F, G and H are sitting around a square table facing towards center. 4 of the persons are sitting in 4 corners while 4 of the persons are sitting in the middle of the sides. They have different ages. Those who sit in the corners having the ages multiple of 3. Those who sit at the middle of the sides having the ages multiple of 2. A sits 2nd to the right of the one who has the age of 44. A is an immediate neighbour of the one who is 39 years old. Two persons sit between B and having the age of 39. B has not the age of 44. E sits 2nd to the left of B. D is immediate right of the person having age of 15. Three persons sit between H and the one having age of 15. The difference between the ages of H and the one who is 2nd to the left of H is 6. D is older than H. Immediate neighbours of D are younger than D. Person having age 22 sits 2nd to the right of the person having age 10. Age of A is not 10. G sits immediate left of the person having age of 22. Age of G is 51. Age of C is greater than 20. Age of C is 24 ages more than F. Age of F is 3 years more than age of A.
How many persons sit between the one who is of 15 years old and the one who is of 12 years old, when counted anticlockwise from the one who is of 15 years old ?