'Returns the exponent of the `i`-th syllable of the associative word
`self`.
Examples
>>> from sympy.combinatorics.free_groups import free_group
>>> f, a, b = free_group("a b")
>>> w = a**5*b*a**2*b**-4*a
>>> w.exponent_syllable( 2 )
2'

def exponent_syllable(self, i):

    return self.array_form[i][1]
