C1111233131211111211113313331323133313231333133312133313231322133311   >>    C111123313121111121111331333132313331323133313331213331323132213331   <<    C1111233131211111211113313331323133313231333133312133313231322133313   >>      C1111233131211111211113313331323133313231333133312133313231322133312   >>