正方形排序：按顺序排列8个正方形

这些正方形可以按照以下顺序排列：

(1,1)(1,2)(2,2)(2,1) (1,2)(1,3)(2,3)(2,2) (1,3)(1,4)(2,4)(2,3) (2,1)(2,2)(3,2)(3,1) (2,2)(2,3)(3,3)(3,2) (2,3)(2,4)(3,4)(3,3) (3,1)(3,2)(4,2)(4,1) (3,2)(3,3)(4,3)(4,2) (3,3)(3,4)(4,4)(4,3) (4,1)(4,2)(4,3)(4,4)

共有8个正方形。