C111123313331323113313331333133313331323131211113311211331311212331323311   >>    C11112331333132311331333133313331333132313121111331121133131121233132331   <<    C111123313331323113313331333133313331323131211113311211331311212331323313   >>      C111123313331323113313331333133313331323131211113311211331311212331323312   >>