qmk_firmware/keyboards/sofle/rev1/rev1.h

#pragma once
#include "quantum.h"

#define LAYOUT( \
    L00, L01, L02, L03, L04, L05,           R00, R01, R02, R03, R04, R05,  \
    L10, L11, L12, L13, L14, L15,           R10, R11, R12, R13, R14, R15,  \
    L20, L21, L22, L23, L24, L25,           R20, R21, R22, R23, R24, R25,  \
    L30, L31, L32, L33, L34, L35, L45, R40, R30, R31, R32, R33, R34, R35, \
              L40, L41, L42, L43, L44, R41, R42, R43, R44, R45  \
    ) \
    { \
        { L00, L01, L02, L03, L04, L05 }, \
        { L10, L11, L12, L13, L14, L15 }, \
        { L20, L21, L22, L23, L24, L25 }, \
        { L30, L31, L32, L33, L34, L35 }, \
        { L40, L41, L42, L43, L44, L45 }, \
        { R05, R04, R03, R02, R01, R00 }, \
        { R15, R14, R13, R12, R11, R10 }, \
        { R25, R24, R23, R22, R21, R20 }, \
        { R35, R34, R33, R32, R31, R30 }, \
        { R45, R44, R43, R42, R41, R40 } \
    }