Cascade for [2, 2], [3, 9]

Singularity types \(K^2\) Orders of local
fundamental groups		 Local indices Index
[2, 2], [3, 9] 150/13 3, 26 1, 13 13
\(\downarrow\)
[2], [2, 9] 200/17 2, 17 1, 17 17