B ground

B groundB groundB groundB groundB groundB ground
B groundB groundB groundB groundB groundB ground
B groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB groundB ground