/* 1 */
{
    "doc_info" : "info_1",
    "wa" : []
}

/* 2 */
{
    "doc_info" : "info_2",
    "wa" : [
        {
            "wa_flag" : 1,
            "ax" : []
        },
        {
            "wa_flag" : 5,
            "ax" : []
        }
    ]
}

/* 3 */
{
    "doc_info" : "info3",
    "wa" : [
        {
            "Wa_flag" : 1,
            "ax" : [
                {
                    "ax_info" : "info3_ax1",
                    "de" : []
                },
                {
                    "ax_info" : "info3_ax2",
                    "de" : []
                }
            ]
        },
        {
            "Wa_flag" : 1,
            "ax" : [
                {
                    "ax_info" : "info3_ax3",
                    "de" : []
                },
                {
                    "ax_info" : "info3_ax4",
                    "de" : []
                }
            ]
        },
        {
            "Wa_flag" : 5,
            "ax" : [
                {
                    "ax_info" : "info3_ax5",
                    "de" : []
                },
                {
                    "ax_info" : "info3_ax6",
                    "de" : []
                }
            ]
        }
    ]
}

/* 4 */
{
    "doc_info" : "info4",
    "wa" : [
        {
            "Wa_flag" : 1,
            "ax" : [
                {
                    "ax_info" : "info4_ax1",
                    "de" : [
                        {
                            "type" : 10,
                            "value" : 5
                        },
                        {
                            "type" : 50,
                            "value" : 3
                        },
                        {
                            "type" : 10,
                            "value" : 1
                        }
                    ]
                }
            ]
        },
        {
            "Wa_flag" : 5,
            "ax" : [
                {
                    "ax_info" : "info4_ax2",
                    "de" : [
                        {
                            "type" : 10,
                            "value" : 5
                        }
                    ]
                }
            ]
        }
    ]
}