C1111233133313231133133313331333133313223313133121111331121133132231211   >>    C111123313331323113313331333133313331322331313312111133112113313223121   <<    C1111233133313231133133313331333133313223313133121111331121133132231213   >>      C1111233133313231133133313331333133313223313133121111331121133132231212   >>