Cascade for [7], [2, 2, 2, 2, 2, 2, 2]

Singularity types \(K^2\) Orders of local
fundamental groups
Local indices Index
[2, 2, 2, 2, 2, 2, 2], [7] 32/7 8, 7 1, 7 7
\(\downarrow\)
[2, 2, 2, 2, 2, 2], [6] 14/3 7, 6 1, 3 3
\(\downarrow\)
[2, 2, 2, 2, 2], [5] 24/5 6, 5 1, 5 5
\(\downarrow\)
[2, 2, 2, 2], [4] 5 5, 4 1, 2 2
\(\downarrow\)
[2, 2, 2], [3] 16/3 4, 3 1, 3 3
\(\downarrow\)
[2, 2], [2] 6 3, 2 1, 1 1