drip:
1 2 3 4 5 6
7 8 9 10 11

route one
1 2 3 4 5
6 7 8 9 10

windows
1 2 3 4 5
6 7 8 9 10

 

4

Even the door in my house had some windows built into it. At the right time of day when the light caught the glass it would send an entire mosaic of light and dark across the room. As the day would go by the pattern would move across the walls and floor.