4 way without neutral ?

I have 4 switches for a couple of lights in my garage. There's no neutral wire, so I guess I have to use Shelly 1L.

2 switches have 3 wires and 2 switches have 4 wires and are marked with a "4 way" sticker.

How do I connect a Shelly 1L ? I tried to use the same scheme as with a "2 way" configuration, but it didn't work.

Thanks for your help!

4way.jpg

I did use a Shelly 1L with a 2 way switch in my house.

First and last switch are the same like in the 2 way configuration. But there are two 4 way switches inbetween.

And none of my switches are momentary switches, they're old style rocker switches.