C1111233133313231133133313331333133313231331121133131333132322222321   >>    C111123313331323113313331333133313331323133112113313133313232222232   <<    C1111233133313231133133313331333133313231331121133131333132322222323   >>      C1111233133313231133133313331333133313231331121133131333132322222322   >>