qmk-dactyl-manuform-a/keyboards/four_banger/four_banger.h

#ifndef KB_H
#define KB_H

#include "quantum.h"

#define LAYOUT_ortho_2x2( \
    K00, K01, \
    K10, K11  \
) { \
    { K00,   K01 }, \
    { K10,   K11 }  \
}

#endif