workings of locos and units below 1A81 2D66 2D52 2D49 2W75 2D51 2D68 2W76 2N40 2N36 1P65 1P54 1P67 1P63 6E45 6S58 6E30 6G65 6E46 6N73 6E09 0N10 6V40 6N77 4E44 6E62 4M54 6S92 6E04 4G34 4G30 4E60