C1111233131211111211113313231333133313331323221333133313113213311   >>    C111123313121111121111331323133313331333132322133313331311321331   <<    C1111233131211111211113313231333133313331323221333133313113213313   >>      C1111233131211111211113313231333133313331323221333133313113213312   >>