20s
What are in the duels section

Simple

A

1v1

B

1v1, 2v2, 3v3

C

1v1, 2v2, 3v3, 4v4, 1v1v1, 2v2v2, 3v3v3, 4v4v4

D

2v2v2v2

E

1v1, 2v2, 3v3, 4v4, 5v5, 1v1v1, 2v2v2