- Metric levels: [1]EABACABADABACABA
- A staircase with each box double the size of the previous one:ABACABADABACABA [1]
- Binary-reflected Gray code (BRGC):to G
- Rotary encoder:to I
- 3-bit Gray code visualized as a traversal of vertices of a cube (0,1,3,2,6,7,5,4): [1]ABACABA
- Château de Chambord:ABACABA [6]