The Drip pattern is one of the most complex on the tree lasting a full 15 seconds. During the first 14.5 seconds, a single drop of water grows and then falls along the center of the tree, filling it up drop by drop. When the tree becomes "full", it then spends half a second "draining" the tree from top to bottom. This pattern is not done by a table but by custom code which maps the location of all the LEDs on the tree. On automatic cycle mode, once the tree has filled up twice it advances on to the next pattern.