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

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發送短信 : Color Groups Associated with Square and Hexagonal Lattices