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open(IN1, "tmp11") || die "Cannot open this file"; 
@lines = <IN1>; 
...
4    4    4            4                3    
        4    4            1                
    1    5    6        4

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1    2            2        5                4
4    4    4            4                3    
0        4    4            1                
0    1    5    6        4