# expression only
# [
#     [2101, 2102, 2103],
#     [2201, 2202, 2203]
# ]

[
    # 21.11.9更新需求：part2left 和 part3left先随机，然后两个right再随机，也就意味着一共可能的block层面的顺序有4种
    # 1 -> 2 & 3 -> 4 & 5 & 6
    # # 1. Part I Left
    # [1101, 1102, 1103],

    # 2. Part II Left
    [
    [2101, 2102, 2103],

    # 3. Part III Left
    [3101, 3102, 3103]
    ],

    # 4. Part I Right [1201, 1202, 1203,
    [
    # 5. Part II Right
    [2201, 2202, 2203],

    # 6. Part III Right
    [3201, 3202, 3203]
    ]
]