extended piano 4 staves system

[Peter Renner-Motz]

Hello everyone,

being new to lilypond I'm searching for a possibility to engrave a 4 staves extended piano score like the one shown in the screenshot.

(showing all C's). 

I tried to add lines with StaffSymbol.line-positions = ... But for intuitive readability I'd like to have this logic of repeating the bass/treble key (so there have to be equally three ledgers in the space from the inner to the outer systems. (moreover: adding lines is conflicting with auto change as I would like to use it)

Can anyone help with this? I would be glad hearing that this is possible.

Thanks in advance.

Best

Peter

Screen Shot 2019-02-18 at 03.18.45.png
Description: Screen Shot 2019-02-18 at 03.18.45.png