A3 C5 C6 B1 D3 (IN USE) D6 E1 E4 D4 (IN USE) B4 E6 C1 (IN USE) C2 C3 (IN USE) B3 (IN USE) B6 A1 A2 A4 A5 D1 (IN USE) D2 (IN USE) D5 E2 E5 E3 C4 A6 B2 B5
F1