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Elements of a free group

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].

Elements of a free group

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 command to get the array? I mean we give $a^2ba^-1c^-1b$ then it returns [1,1,2,-1,-3,2].