My input is 

```
tbl_ports = [[1,2,3,4], [5,6,7,8], [9,10,11,12]]

```

And my expected output is

```
[[1,5,9], [2,6,10], [3,7,11], [4,8,12]]

```

My limit was to do the following to create the output reorder\_list

```
reorder_list = []
for i in range(len(tbl_ports)):
    for col in tbl_ports:
        reorder_list.append(col[i])

```

```
reorder_list=[1, 5, 9, 2, 6, 10, 3, 7, 11]

```

How can I contain them in a list of 3 elements?