size a_0012_ 5 a_0014_ 3 a_0015_ 2 a_0000_ 17 a_0001_ 16 a_0002_ 15 a_0004_ 13 a_0005_ 12 a_0006_ 11 a_0007_ 10 a_0008_ 9 a_0010_ 7 a_0011_ 6