This item spans rows 1 and 2 and spans cols 1 and 2
1.3
1.4
2.3
2.4
3.1
3.2
This item spans rows 3 and 4 and spans cols 3 and 4.
4.1
4.2
This item spans rows 1 and 2.
1.2
1.3
2.2
This item spans rows 2 and 3.
3.1
3.2