B key

B keyB keyB keyB key
B keyB keyB keyB keyB keyB keyB keyB key
B keyB keyB keyB keyB keyB keyB keyB keyB keyB keyB keyB key
B keyB keyB keyB keyB keyB keyB keyB keyB keyB keyB keyB keyB keyB keyB keyB key
B keyB keyB keyB keyB keyB keyB keyB key