The Greek Verbal Network Viewed from a Probabilistic Standpoint 33 +perfective –perfective +projective .................. 1435 0.65 405 0.33 1840 0.54 +directive .................... 764 0.35 822 0.67 1586 0.46 –projective +directive +perfective .................. 1435 0.78 764 0.48 2199 0.64 –perfective .................. 405 0.22 822 0.52 1227 0.36 The sixth set of examples concerns the relation of the ATTITUDE sub- system (NON-ASSERTION) (13) and ASPECT1 system. This set of systemic choices concerns the options of +projective/+directive and ±perfective (systems 13 and 2). Choice of ±perfective results in an equiprobable dis- tribution of +projective/+directive choices. In this regard, the results are consistent with those for system 13 on its own. However, the numerical distribution is reversed. Choice of +perfective results in a distribution of +projective (0.65)/+directive (0.35), similar to that of system 13, but choi- ce of –perfective results in a distribution of +projective (0.33)/+directive (0.67). Both are within the range of equiprobable distribution (if only marginally), but now at opposite ends of the range. This may well have to do with the relationship between the subjunctive and imperative forms in terms of negation 98. Choice of +projective results in a skewed distribution of +perfective over –perfective (0.78/0.22), whereas choice of +directive results in an equiprobable distribution of ±perfective (0.48/0.52). The effect of selection of +projective, realized by subjunctive and optative mood forms, is the first statistical test that has shown that choice of an- other system within the Greek verbal network can affect choice of verbal aspect. The result is a skewed, rather than an equipollent distribution. However, the results of this analysis are consistent with those tendencies noted elsewhere regarding the choices of aspectual and modal forms. Whereas it was noted above that there was a tendency for the finite and aorist forms to be linked, this result extends that conclusion. Here it is noted that, although there is an equiprobable distribution regarding the semantic features of ±perfective when +directive is selected, when +projec- tive is selected the –perfective feature is much more highly marked. In other words, there is a tendency in the subjunctive and optative forms to select the aorist tense-form more often than the present and perfect, indicating that the present and perfect subjunctive and optative forms are more highly marked than the aorist subjunctive and optative forms. This is in confor- mity with analysis of the Greek verbal network presented in Verbal Aspect 99. 98 See Porter, Verbal Aspect, pp. 97, 167-73. 99 See Porter, Verbal Aspect, pp. 181, 323-24.