C1111233133313231133133313331333133313231323331333133313121111113323321   >>    C111123313331323113313331333133313331323132333133313331312111111332332   <<    C1111233133313231133133313331333133313231323331333133313121111113323323   >>      C1111233133313231133133313331333133313231323331333133313121111113323322   >>