I have a list such as below, where the 1 column is position and the other columns aren't important for this question.
1 1 2 3 4 5
2 1 2 3 4 5
5 1 2 3 4 5
8 1 2 3 4 5
9 1 2 3 4 5
10 1 2 3 4 5
11 1 2 3 4 5
I want to fill in the gaps such that the list is continuous and it reads
1 1 2 3 4 5
2 1 2 3 4 5
3 0 0 0 0 0
4 0 0 0 0 0
5 1 2 3 4 5
6 0 0 0 0 0
7 0 0 0 0 0
8 1 2 3 4 5
9 1 2 3 4 5
10 1 2 3 4 5
11 1 2 3 4 5
I am familiar with awk and shell scripts, but whatever way it can be done is fine with me. Thanks for any help..