20
33
150
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      X        X    
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X   2       4      X
X      4           X
X       XXX    7   X
X  3  3XXXXX       X
X       XXX        X
X1              2  X
X            3     X
X  B    3          X
X                2 X
X  2          4    X
X        1      1  X
X   XXXX           X
X   X  X     3  3  X
X   X6    1        X
X5  X  X     2     X
X   XXXX           X
X       2    3     X
X   7              X
X      XXXXXXXXXXX X
X 3    XXXXXXXXXXX X
X      XXXXXXXXXXX X
X 2           1    X
X    5       1111  X
X   XXXX    1111   X
X   1  XXXX  1     X
X 4 XXXX           X
X        2 9       X
X    3         1   X
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