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my @data = (
    ["1st","2nd","3rd","4th","5th","6th","7th", "8th", "9th"],
    [    3,   4,   14,   '',   '',    '',    7,    20,    15],
    [    '',   '',    '',    5,    3,  1,    3,     4,     1],
);

my @data = (
    ["1st","2nd","3rd","4th","5th","6th","7th", "8th", "9th"],
...
    [   '',  '',   '',    5,     3,    1,    3,     4,     1],
    [    5,   12,  24,   33,    19,    8,    6,    15,    21],
);

my @data = (
    ["1st","2nd","3rd","4th","5th","6th","7th", "8th", "9th"],
...
    [    5,   12,  24,   33,    19,    8,    6,    15,    21],
    [    3,   14,  15,    9,     2,    6,    5,     3,     5],
);