C312312111133131212111133131133133313331323223313231323133311231   >>    C31231211113313121211113313113313331333132322331323132313331123   <<    C312312111133131212111133131133133313331323223313231323133311233   >>      C312312111133131212111133131133133313331323223313231323133311232   >>