C11111333133313232233133313331333131133132313331322133311231321   >>    C1111133313331323223313331333133313113313231333132213331123132   <<    C11111333133313232233133313331333131133132313331322133311231323   >>      C11111333133313232233133313331333131133132313331322133311231322   >>