C1111233133313231133133313331333133313231323331333133313121111133322121   >>    C111123313331323113313331333133313331323132333133313331312111113332212   <<    C1111233133313231133133313331333133313231323331333133313121111133322123   >>      C1111233133313231133133313331333133313231323331333133313121111133322122   >>