b1b2b3b4b5b6b7b8b9b10b11b12b13b14b15b16b17b18b19b20b21b22b23b24b25b26b27b28b29b30b31b32b33b34b35b36b37b38b39b40b41b42b43b44b45b46b47b48b49b50
w1w2w3w4w5w6w7w8w9w10w11w12w13w14w15w16w17w18w19w20w21w22w23w24w25w26w27w28w29w30w31w32w33w34w35w36w37w38w39w40w41w42w43w44w45w46w47w48w49w50w51w52w53w54w55w56w57w58w59w60w61w62w63w64w65w66w67w68w69w70w71
a1a2a3a4a5a6a7a8a9a10a11a12a13a14a15a16a17a18a19a20a21a22a23a24a25a26a27a28a29a30a31a32a33a34a35a36a37a38a39a40a41a42a43a44a45a46a47a48a49
t1t2t3t4t5t6t7t8t9t10t11t12t13t14t15t16t17t18t19t20t21t22t23t24t25t26t27t28t29t30t31t32t33t34t35t36t37t38t39t40t41t42t43t44t45t46t47t48t49t50t51t52t53t54t55t56t57t58t59t60t61t62t63t64t65t66t67t68
t1t2t3t4t5t6t7t8t9t10t11t12t13t14t15t16t17t18t19t20t21t22t23t24t25t26t27t28t29t30t31t32t33t34t35t36t37t38t39t40t41t42t43t44t45t46t47t48t49t50t51t52t53t54t55t56t57t58t59t60t61t62t63t64t65t66t67t68
e1e2e3e4e5e6e7e8e9e10e11e12e13e14e15e16e17e18e19e20e21e22e23e24e25e26e27e28e29e30e31e32e33e34e35e36e37e38e39e40e41e42e43e44e45e46e47e48e49e50e51e52e53
u1u2u3u4u5u6u7u8u9u10u11u12u13u14u15u16u17u18u19u20u21u22u23u24u25u26u27u28u29u30u31u32u33u34u35u36u37u38u39u40u41u42u43u44u45u46u47u48u49u50u51u52u53u54u55u56u57u58u59u60u61u62u63u64u65u66u67u68u69