C11111333133313232233133313331333131133132313331323133311233131321   >>    C1111133313331323223313331333133313113313231333132313331123313132   <<    C11111333133313232233133313331333131133132313331323133311233131323   >>      C11111333133313232233133313331333131133132313331323133311233131322   >>