發送短信 : Translational tilings by a polytope, with multiplicity

 __   _      ___      ______    _____     _  __  
| || | ||   / _ \\   /_____//  |  ___||  | |/ // 
| '--' ||  / //\ \\  `____ `   | ||__    | ' //  
| .--. || |  ___  || /___//    | ||__    | . \\  
|_|| |_|| |_||  |_|| `__ `     |_____||  |_|\_\\ 
`-`  `-`  `-`   `-`  /_//      `-----`   `-` --` 
                     `-`