Cascade for [2, 2], [2, 2], [2, 2, 3, 2, 2]

Singularity types \(K^2\) Orders of local
fundamental groups		 Local indices Index
[2, 2], [2, 2], [2, 2, 3, 2, 2] 3/5 3, 3, 15 1, 1, 5 5
\(\downarrow\)
[2], [2, 2], [2, 2, 2, 2, 2] 1 2, 3, 6 1, 1, 1 1