def fusionR(T, A, B, C):
    t = deepcopy(T)
    if A > B or B > C:
        return t
    elif t[B + 1] >= t[A]:
        return fusionR(t, A + 1, B, C)
    elif t[A] > t[B + 1]:
        print("a")
        t = T[:A]+[T[B+1]]+T[B+1:A]+T[B+2:]
        return fusionR(t, A+1, B+1 , C)
    return t