C111123313331323113313331333133313231323133312111133131333131323233231   >>    C11112331333132311331333133313331323132313331211113313133313132323323   <<    C111123313331323113313331333133313231323133312111133131333131323233233   >>      C111123313331323113313331333133313231323133312111133131333131323233232   >>