qmk-firmware/keyboards/hillside/46/0_1/0_1.c

// Copyright 2022 Michael McCoyd (@mmccoyd)
// SPDX-License-Identifier: GPL-2.0-or-later

#include "0_1.h"

// Keymatrix spots to ignore, as one signals handedness and others have no key
const matrix_row_t matrix_mask[] = {
//c:543210  column id's
  0b111111,
  0b111111,
  0b111111,
  0b111110,
  
//c:543210  
  0b111111,
  0b111111,
  0b111111,
  0b111110
};