The 2 tables should look the same

c11	c12
c21		c22
c31	c32	c33	c34

c11	X1		c12
c21			c22
c31	X1	c32	c33	c34

The 2 tables should look the same

c11	c12	c13
c21	c22	c13
c31	c32	c33

c11	c12	c13
c21	X1	c13	c22
c31	c32	c33