I am trying to slice sublists (arr) using elements from other sublists (slc). I am using Python. My code works just fine if there are not repeated values on the sublists to slice (arr), neither case I can not get the chunks.
arr[0] must be sliced with slc[0], arr[1] must be sliced with slc[1] and
arr[2] must be sliced with slc[2].

Here is an example and the code I am using right now.

arr=[ [5, 9, 8, 1, 0, 10, 11, 5], [13, 4, 13, 2, 5, 6, 13], [8, 25, 13, 9, 8, 7]]

slc=[[0, 5] , [5, 13], [13, 7]]

rslt=[]

for i in range(len(arr)):
                rslt.append(arr[i][arr[i].index(slc[i][0]):arr[i].index(slc[i][1])+1])

current result:

rlst=[[], [], [13, 9, 8, 7]]

expected result:

rlst=[[0, 10, 11, 5], [5, 6, 13], [13, 9, 8, 7]] #expected results

My current code is not working for arr[0] and arr[1] because there are several elements from slc[0] and slc[1] on arr[0] and arr[1] respectively, so the slicing procedure is not working properly.

thanks in advance.