A single bit error can be detected by the receiver of a message so encoded. For example, if 00001 is received, the receiver would find that the received codeword is not valid (in either code). A pair of bit errors could result in an invalid codeword (e.g. a transmitted 00000 could be received as 11000) but could also result in a valid codeword from the same code (e.g. a transmitted 00000 could be received as 00011). However, it is impossible for a pair of bit errors to result in a codeword that belongs to the other code. A minimum of three bit errors would be required for the receiver to interpret a codeword as belonging to the wrong code, thus breaking encapsulation. In many systems, the likelihood of three out of five bits being flipped is considerably less than the likelihood of one or two flipped bits.