------------------------------------------------------------------| --------------3-3---------------3---------------------------------| --4-4-----2-2-2-2---4-4-----2-2-2-2-------------------------------| --4-4-4-4-2-2-0-0---4-4-4-4-2-2-0-2-------------------------------| --2-2-4-4-0-0-------2-2-4-4-0-0---0-------------------------------| ------2-2---------------2-2---------------------------------------| Repeat many times