C1111233131211111211113313231333133313331323331313331311331311312233232321   >>    C111123313121111121111331323133313331333132333131333131133131131223323232   <<    C1111233131211111211113313231333133313331323331313331311331311312233232323   >>      C1111233131211111211113313231333133313331323331313331311331311312233232322   >>