| Singularity types | \(K^2\) | Orders of local fundamental groups |
Local indices | Index |
|---|---|---|---|---|
| [2, 2], [3, 2, 3], [2, 2] | 3 | 3, 12, 3 | 1, 2, 1 | 2 |
| \(\downarrow\) | ||||
| [2], [2, 2, 3], [2, 2] | 24/7 | 2, 7, 3 | 1, 7, 1 | 7 |
| \(\downarrow\) | ||||
| [2], [2, 2, 2], [2] | 4 | 2, 4, 2 | 1, 1, 1 | 1 |