APP> START_PARTU_8X8
    APP> PARTITION_NONE
    START_PARTU_16X16
    APP> END_PARTU_8X8

    APP> START_PARTU_8X8
    APP> PARTITION_SPLIT
    START_PARTU_4X4
    ........
    START_PARTU_4X4
    ........
    START_PARTU_4X4
    ........
    START_PARTU_4X4
    ........
    APP> END_PARTU_8X8
    PARTU_16X4
    16X16
    4X16   
    APP> END_PARTU_8X8