l-------------------------------------l (play some times)
l-------------------------------------l
l-------------------------------------l
l-4/5-5-----------------4/5-5-5\4/5-7-l
l-5/7-7-2-2-2-2-2-2-2-2-5/7-7-3\2/3-5-l
l-------0-0-0-0-0-0-0-0---------------l
l---------7-------l (play some times)
l-5-8-7-8---8-7-8-l
l-----------------l
l-----------------l
l-----------------l
l-----------------l
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