For j = 3,4, 5, however, the approximating language becomes substantially smaller than that in the case of RTN, but at the expense of large automata.
if we compare the sizes of the automata for RTN+j in Figure 16 with those for RTNd in Figures 13 and 14, then Figure 17 suggests the large sizes of the automata for RTN+j are not compensated adequately by a reduction of the percentage of sentences that are recognized.