C1111233133313231133133313331333132313331322312113313231333131121233121   >>    C111123313331323113313331333133313231333132231211331323133313112123312   <<    C1111233133313231133133313331333132313331322312113313231333131121233123   >>      C1111233133313231133133313331333132313331322312113313231333131121233122   >>