[1,2] [100,150]
[1] [250]
[1,2] [250,150]
[2] [150]
['1','2'] [100,150]
['1'] [250]
['1','2'] [250,150]
['2'] [150]
20 [1,2] [100,150]
20 [1] [250]
20 [1,2] [250,150]
20 [2] [150]