C111123313331323113313331333133313231323133313133313231311211323311   >>    C11112331333132311331333133313331323132313331313331323131121132331   <<    C111123313331323113313331333133313231323133313133313231311211323313   >>      C111123313331323113313331333133313231323133313133313231311211323312   >>