1  1: false === false

     2  2: false === false

     3  3: true === true

     4  4: true === true

     5  5: true === true

     6  6: false === false

     7  7: false === false

     8  8: false === false

     9  9: false === false

    10 10: false === false

    11 11: true === true

    12 12: true === true

    13 13: false === false

    14 14: false === false

    15 15: false === false

    16 16: true === true

    17 17: true === true

    18 18: true === true

    19 19: true === true

    20 20: true === true