As an example, consider adding two ciphertexts. Adding two values could en up outside the range of either ciphertexts, and thus necessitate a carry, which would then be carried onto the first padding bit. In the figure below, each plaintext over 32 bits has one bit of padding on its left (i.e., the most significant bit). After the addition, the padding bit is no longer available, as it has been used in order for the carry. This is referred to as consuming bits of padding. Since no padding is left, there is no guarantee that additional additions would yield correct results.