C1111233133313231133133313331333132313231333121111121111332112312121   >>    C111123313331323113313331333133313231323133312111112111133211231212   <<    C1111233133313231133133313331333132313231333121111121111332112312123   >>      C1111233133313231133133313331333132313231333121111121111332112312122   >>