An ant moves on the following lattice, beginning at the dot labeled A.

An ant moves on the following lattice, beginning at the dot labeled A. Each minute he moves to one of the dots neighboring the dot he was at, choosing from among its neighbors at random. What is the probability that after 5 minutes he is at the dot labeled B?

https://latex.artofproblemsolving.com/d/0/4/d04c14a38efb837151549f4b864fde841fa50f95.png

THANKS FOR ALL HELP