explanation about output of the example

Question

I can't understand why the output of the example is

    [ (4, ['0001', '0011', '1100' ]),
      (5, ['011', 1000', '110' ]),
      (6, ['0000', '111']),
      (7, ['0010','1001' ]),
      (8, ['0100']),
      (10,['010']),
      (11,['000', '001', '11']),
      (12,['100']),
      (15,['01','10']),
      (23,['00'])
    ]

and not

[(1, ['1101', '1011']),
 (2, ['0101', '1010', '0110']),
 (3, ['101', '0111', '1111', '1110']),
 (4, ['0001', '0011', '1100']),
 (5, ['011', '110', '1000']),
 (6, ['111', '0000']),
 (7, ['1001', '0010']),
 (8, ['0100']),
 (10, ['010']),
 (11, ['11', '001', '000']),
 (12, ['100']),
 (15, ['01', '10']),
 (23, ['00'])]

that is why the result hasn't the frequences (1?), 2, 3.

Answer 1

From the exercise description: 

Furthermore, we want to list the n highest frequencies and the
    related segments, where n is a given integer.

 However when you look into the expected output:

    "filename":"ft1.txt",

    "expected":[[1, ["1011", "1101"]], [2, ["0101", "0110", "1010"]],

                [3, ["0111", "101", "1110", "1111"]], [4, ["0001", "0011", "1100"]],

                [5, ["011", "1000", "110"]], [6, ["0000", "111"]], [7, ["0010", "1001"]],

                [8, ["0100"]], [10, ["010"]], [11, ["000", "001", "11"]], [12, ["100"]],

                [15, ["01", "10"]], [23, ["00"]]],

There is a mistake in the description (or the tests) and we don't actually know which is the correct one. You should try both cases and see if the tests pass or not.

Answer 2

It is just the wrong example in the description, it should list n highest frequencies, not n highest subsequences.