C111123313331323113313331333133313121111331322333132313231313331   >>    C11112331333132311331333133313331312111133132233313231323131333   <<    C111123313331323113313331333133313121111331322333132313231313333   >>      C111123313331323113313331333133313121111331322333132313231313332   >>