C1111233133313231133133313231333133313113313113313233311231211111   >>    C111123313331323113313331323133313331311331311331323331123121111   <<    C1111233133313231133133313231333133313113313113313233311231211113   >>      C1111233133313231133133313231333133313113313113313233311231211112   >>