Needs Macro for row sorting

Hi;

i want to create a macro that will sort these data:
1 1
1 2
2 2
2 2
3 2
3 3
3 3
4 4
4 5
4 5
5 5

to:
1 1
1
2 2
2 2
2
2
3 3
3 3
3
4 4
4
4
5 5
5
5

Thanks in advance