C1111233133313231133133313331323133313113313121111331323221212121   >>    C111123313331323113313331333132313331311331312111133132322121212   <<    C1111233133313231133133313331323133313113313121111331323221212123   >>      C1111233133313231133133313331323133313113313121111331323221212122   >>