1 1 1/3 2 © 1/3 3 3 2/3 1/3 0 1 0 P 1/3 0 2/3 1/3 1/3 1/31/3 1/3 1/3 1/3 2/3 1 1 2 3 P = ￾ ⇤ 010 1/302/3 1/3 1/3 1/3 ⇥ ⌅