Table 2a shows the translation quality of different systems in terms of BLEU score. We can see that for all language pairs (ab) constantly improves performance of LRHiero, significantly better than <cite>LR-Hiero+CP</cite> and LR-Hiero (p-value<0.05) on Cs-En and Zh-En, evaluated by MultEval (Clark et al., 2011) . But modifying rule type (c) does not show any improvement due to spurious ambiguity created by 5 We report results on Cs-En and De-En in (<cite>Siahbani et al., 2013</cite>) .