        1        1        1        1        1        1        1        1        1        1        1        1        1        1        1        1
01234567012345670123456701234567012345670123456701234567012345670123456701234567012345670123456701234567012345670123456701234567
	x	x	x	x	x	x	x	x	x	x	x	x	x	x	x	x
