I wanted to share with you this video :
After chasing a few links, the right hand side seems to go according the André Verchuren (also spelled Verschueren) system:
D F Ab B D F Ab B
C# E G Bb C# E G Bb
A C Eb F# A C Eb F#
It is like the right hand side of a C-system CBA but with the "wrong" slant of the notes.
A diagram with French note names can be found here