C1111233133313231133133313331333133313231331121133131133132313112331132121   >>    C111123313331323113313331333133313331323133112113313113313231311233113212   <<    C1111233133313231133133313331333133313231331121133131133132313112331132123   >>      C1111233133313231133133313331333133313231331121133131133132313112331132122   >>