C111123313331323113313331333133313331323131211113313331322232223331333231311   >>    C11112331333132311331333133313331333132313121111331333132223222333133323131   <<    C111123313331323113313331333133313331323131211113313331322232223331333231313   >>      C111123313331323113313331333133313331323131211113313331322232223331333231312   >>