C111123313121111121111331333133313331323221211113313113213113112311   >>    C11112331312111112111133133313331333132322121111331311321311311231   <<    C111123313121111121111331333133313331323221211113313113213113112313   >>      C111123313121111121111331333133313331323221211113313113213113112312   >>