Christoph Cullmann's Layout

Derived from the default layout.

Lower and raise layer mostly like in the default layout.

NAV layer with reverse-T cursors.

CMD/FN layer for extras.

Try 36 key layout

qmk flash -c -kb planck/rev6 -km manna-harbour_miryoku -e FORCE_LAYOUT=ortho_4x12 -e MIRYOKU_ALPHAS=QWERTY -e MIRYOKU_NAV=INVERTEDT