My question is regarding the presentation of elements of the free group $F_2$.
G.<a,b,c> = FreeGroup()
G([1,1,2,-1,-3,2])
Then the result will be
a^2*b*a^-1*c^-1*b
Is there any way to get the array? I mean we give $a^2ba^-1c^-1b$ then it returns [1,1,2,-1,-3,2].