C11111333133313232233133313331333133313231333133313331123313121113331323221311   >>    C1111133313331323223313331333133313331323133313331333112331312111333132322131   <<    C11111333133313232233133313331333133313231333133313331123313121113331323221313   >>      C11111333133313232233133313331333133313231333133313331123313121113331323221312   >>