How to knock Morse code?

Morse code consists of dots (. ) and dash (-) symbols are in accordance with the following principles:

1, a point is a basic signal unit, and the time length of each stroke is equivalent to the time length of three points.

2. In a letter or number, the interval between points and strokes should be the length of two points.

The interval between letters (numbers) and letters (numbers) is 7 o'clock.

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