C11112331333132311331333133313331333132313121111331333122233311   >>    C1111233133313231133133313331333133313231312111133133312223331   <<    C11112331333132311331333133313331333132313121111331333122233313   >>      C11112331333132311331333133313331333132313121111331333122233312   >>