C111123313331323113313331333133313231323133312111133131323223313232332311   >>    C11112331333132311331333133313331323132313331211113313132322331323233231   <<    C111123313331323113313331333133313231323133312111133131323223313232332313   >>      C111123313331323113313331333133313231323133312111133131323223313232332312   >>