C11111333133313232233133313331333132313331323321313331333132313212221   >>    C1111133313331323223313331333133313231333132332131333133313231321222   <<    C11111333133313232233133313331333132313331323321313331333132313212223   >>      C11111333133313232233133313331333132313331323321313331333132313212222   >>