C1111233133313231133133313331333133313223313133121111112113123331   >>    C111123313331323113313331333133313331322331313312111111211312333   <<    C1111233133313231133133313331333133313223313133121111112113123333   >>      C1111233133313231133133313331333133313223313133121111112113123332   >>