C1111233133313231133133313231333133313113313113313113313231323221331123311   >>    C111123313331323113313331323133313331311331311331311331323132322133112331   <<    C1111233133313231133133313231333133313113313113313113313231323221331123313   >>      C1111233133313231133133313231333133313113313113313113313231323221331123312   >>