Instead it reveals a problematic use of heuristics in GLA 12 : since the constraint B is violated by [ubita], it is always demoted whenever the underlying form /uba/ is encountered during learning.
even though the expected model assigns equal values to µ 3 and µ 4 (corresponding to D and B, respectively), µ 3 is always less than µ 4 , simply because there is more chance of penalizing D rather than B.