5 singularity types
| Singularity types | \(K^2\) | Orders of local fundamental groups |
Local indices | Index | Cascade |
|---|---|---|---|---|---|
| \(\phi\) | 9 | - | 1 | 1 | cascade |
| [2] | 8 | 2 | 1 | 1 | cascade |
| [2], [2, 2] | 6 | 2, 3 | 1, 1 | 1 | cascade |
| [2], [2], [2, 2, 2] | 4 | 2, 2, 4 | 1, 1, 1 | 1 | cascade |
| [2, 2], [2, 2], [2, 2] | 3 | 3, 3, 3 | 1, 1, 1 | 1 | cascade |