C111123313121111121111331333133313331323231333133313232113213312321   >>    C11112331312111112111133133313331333132323133313331323211321331232   <<    C111123313121111121111331333133313331323231333133313232113213312323   >>      C111123313121111121111331333133313331323231333133313232113213312322   >>