1. 51.
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    _____________.+d888888888888888o... ,______________
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    __________.88888888p'_'q8888888888888888b,________
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    _______d888888888p____________:98888888888888888b'__
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    ________'__9888888888888888888888888888888b_________
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    ____________q8888888^8"""q8'q."q8p888888888b.________
    ···
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