C111123313331323113313331333133313231323133312111133131133112111   >>    C11112331333132311331333133313331323132313331211113313113311211   <<    C111123313331323113313331333133313231323133312111133131133112113   >>      C111123313331323113313331333133313231323133312111133131133112112   >>