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[]
[551998,551999,552000,552001,552002,552003,552004,552005,552006,552007]
{"551998":[1,2,3,4],"551999":[1,2,3,4],"552000":[1,2,3,4],"552001":[1,2,3,4],"552002":[1,2,3,4],"552003":[1,2,3,4],"552004":[1,2,3,4],"552005":[1,2,3,4],"552006":[1,2,3,4],"552007":[1,2,3,4]}
exam
156541947