Cascade for [4], [2, 2, 2, 3]

Singularity types \(K^2\) Orders of local
fundamental groups		 Local indices Index
[4], [2, 2, 2, 3] 49/9 4, 9 2, 9 18
\(\downarrow\)
[3], [2, 2, 3] 121/21 3, 7 3, 7 21
\(\downarrow\)
[2], [2, 3] 32/5 2, 5 1, 5 5