C3132121111133313233121111331333133313331333133313331323133313231333232321   >>    C313212111113331323312111133133313331333133313331333132313331323133323232   <<    C3132121111133313233121111331333133313331333133313331323133313231333232323   >>      C3132121111133313233121111331333133313331333133313331323133313231333232322   >>