or download this
a1_1[1] a1_1[2] a1_1[10] a1_2[1] a1_2[2] a1_2[10] a1_10[1] a1_10[2]
a1_10[10] a2_1[1] a2_1[2] a2_1[10] a2_2[1] a2_2[2] a2_2[10] a2_10[1]
...
b2_1[10] b2_2[1] b2_2[2] b2_2[10] b2_10[1] b2_10[2] b2_10[10] b10_1[1]
b10_1[2] b10_1[10] b10_2[1] b10_2[2] b10_2[10] b10_10[1] b10_10[2]
b10_10[10]