Array
(
    [0] => Array
        (
            [field_77] => e
            [COUNT(field_77)] => 4
        )

    [1] => Array
        (
            [field_77] => m
            [COUNT(field_77)] => 18199
        )

    [2] => Array
        (
            [field_77] => p
            [COUNT(field_77)] => 3631
        )

    [3] => Array
        (
            [field_77] => r
            [COUNT(field_77)] => 47
        )

    [4] => Array
        (
            [field_77] => s
            [COUNT(field_77)] => 267
        )

    [5] => Array
        (
            [field_77] => x
            [COUNT(field_77)] => 6505
        )

)