... hold at either D- or S -structure. In sentences (a) and(b), Rivera is c-commanded by he at D -structure, so we have a condi-tion-C violation. The adjunct is inserted between D- and S -structure. In ... S -structure. In (d), Rivera is c-commanded by he at S -structure, so again we have acondition-C violation. However, in (c), Rivera is never c-commandedby he, it is inserted after the wh-phrase moves.20 This ... levels of D -structure and S -structure in MP,21so we can not account for the phenomena using level ordering.Uriagereka (1999) presents a clever alternative making use of thethree-dimensionality...