Have any two code word Ci=0000, Cj=0111, hamming distance is 3, meet Dc>=2 r + 1;

If Ci wrong one, wrong into C '1000, after the test, can satisfy conditions of error correction in a variety of code word:

The first: C 'error correction into 0000, 1000 C' hamming distance is 1, 1000 and 0000 and 0000 and Cj 0111 hamming distance of 3, 3 & gt;=r + 1
The second: C 'error correction into 1001, 1000 C' hamming distance is 1, 1000 and 1001 and 1001 and Cj 0111 hamming distance of 3, 3 & gt;=r + 1

, we assume that the received C '1000 and 0111 after Cj, don't know what Ci is 0000 or 1001 cases, how to correct to correct?

Is that I missed some details, still have a problem?
For your guidance!