C1111233133313231133133313331333133313231232313331333131131212123311   >>    C111123313331323113313331333133313331323123231333133313113121212331   <<    C1111233133313231133133313331333133313231232313331333131131212123313   >>      C1111233133313231133133313331333133313231232313331333131131212123312   >>