-1.3 -1.0 -0.7 -0.4 -0.1 0.2 0.5 0.8 1.1 1.4 -1.4 -1.1 -0.8 -0.5 -0.2 0.1 0.4 0.7 1.0 1.3 1.6 -1.5 -1.2 -0.9 -0.6 -0.3 0.0 0.3 0.6 0.9 1.2 1.5 1.8 x y z
| ―
↺
↕ ↔
i