A1A1A2A2A3A3A4A4A5A5A6A6B1B1B2B2B3B3B4B4B5B5B6B6C1C1C2C2C3C3C4C4C5C5C6C6D1D1D2D2D3D3D4D4D5D5D6D6E1E1E2E2E3E3E4E4E5E5E6E6GNDGND