Nested For Loops
v Just as with Do While loops, we can nest one for loop
inside another.  This is very common when dealing
with 2-dimensional arrays
Result:
1  1
1  2
2  1
2  2
3  1
3  2
Dim i As Integer, j As Integer
For i = 1 To 3
  For j = 1 To 2
    Print i, j
  Next j
Next i