C111123313331323113313331333133313231323133312111133131333121121   >>    C11112331333132311331333133313331323132313331211113313133312112   <<    C111123313331323113313331333133313231323133312111133131333121123   >>      C111123313331323113313331333133313231323133312111133131333121122   >>