C1111233133313231133133313331333133313231331121133132322331323123311   >>    C111123313331323113313331333133313331323133112113313232233132312331   <<    C1111233133313231133133313331333133313231331121133132322331323123313   >>      C1111233133313231133133313331333133313231331121133132322331323123312   >>