<image>Below is the problem about the three hollow square formations Little Li created using game pieces. Each side of the outermost layer has 8 pieces. Please find the pattern and fill in the blanks. 
(1) In Figure 1, each side of the outermost layer has 8 pieces, with a total of 1 layer. The total number of pieces is: (8-1)×4=28 
(2) In Figure 2, each side of the outermost layer has ____ pieces, with a total of ____ layers. The total number of pieces is: ____×____×4=____;
(3) In Figure 3, each side of the outermost layer has ____ pieces, with a total of ____ layers. The total number of pieces is: ____×____×4=____;
(4) There is a hollow square formation where each side of the outermost layer has 13 pieces and it has 4 layers. The total number of pieces in the square formation is ____ .