Cascade for [2], [2, 2, 2], [2, 9, 4]

Singularity types \(K^2\) Orders of local
fundamental groups
Local indices Index
[2], [2, 9, 4], [2, 2, 2] 108/11 2, 66, 4 1, 11, 1 11
\(\downarrow\)
[2], [2, 9, 3], [2, 2] 486/49 2, 49, 3 1, 49, 1 49
\(\downarrow\)
[2], [2, 9, 2], [2] 81/8 2, 32, 2 1, 16, 1 16