C111123313331323113313331333133313231323133312111133112211231323231   >>    C11112331333132311331333133313331323132313331211113311221123132323   <<    C111123313331323113313331333133313231323133312111133112211231323233   >>      C111123313331323113313331333133313231323133312111133112211231323232   >>