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 _    _    _    _     _____    _    _    _    _   
| |  | || | || | ||  /  ___|| | || | || | |  | || 
| |/\| || | || | || | // __   | || | || | |/\| || 
|  /\  || | \\_/ || | \\_\ || | \\_/ || |  /\  || 
|_// \_||  \____//   \____//   \____//  |_// \_|| 
`-`   `-`   `---`     `---`     `---`   `-`   `-`

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發送短信 : On the construction of rhythmic graphs