Water circulation

• Parent: Water circulation by Sample Maker at 2007-10-15_19:32:13

• Derived: Water circulation by anonymous at 2008-10-08_12:54:53

Water -> ice
Water -> steam
Water -> water
water -> ice [label="freezing"]
steam -> water [label="cooling"]
Water [shape=doublecircle]
{rank = same; ice; water; steam}