C11111333133313232233133313331333133313231312111133131121211113313333121211   >>    C1111133313331323223313331333133313331323131211113313112121111331333312121   <<    C11111333133313232233133313331333133313231312111133131121211113313333121213   >>      C11111333133313232233133313331333133313231312111133131121211113313333121212   >>