I'm trying to flat this kind of data structure into a "plain" dataframe.

Raw data is a list of dictionaries, which contain lists.

Data looks like this( reproducible example): 

```
data = [{'A':[1,2,3,4], 'B':[11,12,13,14]}, {'A':[5,6,7,8], 'B':[15,16,17,18]}]

```

My desidered output should be the following pandas dataframe:

```
Out[01]: 
   A   B
0  1  11
1  2  12
2  3  13
3  4  14
4  5  15
5  6  16
6  7  17
7  8  18

```

How can i achieve this result?
Thanks