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[]
[842470,842471,842472,842473,842474,842475,842476,842477,842478,842479]
{"842470":[1,2,3,4],"842471":[1,2,3,4],"842472":[1,2,3,4],"842473":[1,2,3,4],"842474":[1,2,3,4],"842475":[1,2,3,4],"842476":[1,2,3,4],"842477":[1,2,3,4],"842478":[1,2,3,4],"842479":[1,2,3,4]}
exam
159380626