C11111333133313232233133313331333131133132233133313113313231333131321321   >>    C1111133313331323223313331333133313113313223313331311331323133313132132   <<    C11111333133313232233133313331333131133132233133313113313231333131321323   >>      C11111333133313232233133313331333131133132233133313113313231333131321322   >>