C11111333133313232233133313331333133313331311331333133321313231   >>    C1111133313331323223313331333133313331333131133133313332131323   <<    C11111333133313232233133313331333133313331311331333133321313233   >>      C11111333133313232233133313331333133313331311331333133321313232   >>