dear R family,

i have a list of 16 and each of of that is further subdivided into variable number of lists. So, i have a kind of list of lists phenomenon.

[[1]]$'1'

1       2      3
   
4       5      6

7      8       9


[[1]]$'2'

1       2      3
   
4       5      6

7      8       9

i want to convert both these sublists into one column and then cbind it in the following way

col1     col2

1           1

2           2

3           3
.
.

9         9


i want to the same operations on all the 16 lists. 

thanks in advance,

elisa