Insert Column 1

Cell 0,0 Cell 1,0 Cell 2,0
Cell 0,1 Cell 1,1 Cell 2,1
Cell 0,2 Cell 1,2 Cell 2,2
Cell 0,0 Cell 1,0 Cell 2,0
Cell 0,1 Cell 1,1 Cell 2,1
Cell 0,2 Cell 1,2 Cell 2,2

Insert column 2, with colspan and rowspan, and header row

Header Header Header Header Header Header
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Column 1 Column 2 Column 5 Column 6
Column 1 Column 2 Column 3 Column 6
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Column 1 Column 2 Column 4 Column 5 Column 6
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Footer Cell Cell Cell Cell Cell
Header Header Header Header Header Header
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Column 1 Column 2 Column 5 Column 6
Column 1 Column 2 Column 3 Column 6
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Column 1 Column 2 Column 4 Column 5 Column 6
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6
Footer Cell Cell Cell Cell Cell