BBBBBBBBBBBBBBBBBBBBBBBBBBB
IIIIIIIIIIIIIIIIIIII
DDDDDDDDDDDDDDDDDDDDDDDDDD
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
PPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT