damlankosso notation
A notation system by the user @damlankosso (Patrick Dogo Guede) on Instagram.
Mouvement d'entrechoc Hélice Synchro
Source: www.instagram.com/p/CxLyUbmsVT4/ (posted September 14, 2023)
Rythme 32: Le mouvement d'hélice synchronisé saisi verse le haut
Rythme 33: Le mouvement d'hélice synchronisé saisi verse le haut le bas
Source: (www.instagram.com/p/C_jS3VEs4Sm/) (posted September 5, 2023)
From these notation examples and videos, the Japanese equivalent names of these techniques would be as follows:
Shake is notated as an x notehead on the top line.
Heli is notated as a solid notehead on the top line, with the circle arrow over it.
Flip-flop and den-den (without grab) are notated as hollow straight arrows.
Flip-flop and den-den (with grab) are notated as wavy solid arrows.
This is flip-flop delay as an example: