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

Singularity types \(K^2\) Orders of local
fundamental groups
Local indices Index
[2, 2], [2, 2], [2, 4, 2, 2, 2, 4, 2] 6/5 3, 3, 120 1, 1, 5 5
\(\downarrow\)
[2], [2, 2], [2, 3, 2, 2, 2, 4, 2] 24/19 2, 3, 76 1, 1, 38 38
\(\downarrow\)
[2, 2], [2, 2, 2, 2, 2, 4, 2] 3/2 3, 32 1, 8 8
\(\downarrow\)
[2], [2, 2], [2, 2, 2, 4, 2] 27/11 2, 3, 22 1, 1, 11 11
\(\downarrow\)
[2], [2], [2, 2, 2, 3, 2] 18/7 2, 2, 14 1, 1, 7 7
\(\downarrow\)
[2], [2, 2, 2, 2, 2] 3 2, 6 1, 1 1
\(\downarrow\)
[2], [2], [2, 2, 2] 4 2, 2, 4 1, 1, 1 1