C1111233133313231133133313331333133313231331121133131333132232321   >>    C111123313331323113313331333133313331323133112113313133313223232   <<    C1111233133313231133133313331333133313231331121133131333132232323   >>      C1111233133313231133133313331333133313231331121133131333132232322   >>