(Toch B), (Toch A) "man", which belongs to the same declension as above, but has oblique singular (Toch B), (Toch A), and corresponding oblique stems (Toch B), (Toch A) for the secondary cases. This is thought to stem from the generalization of n-stem adjectives as an indication of determinative semantics, seen most prominently in the weak adjective declension in the Germanic languages (where it cooccurs with definite articles and determiners), but also in Latin and Greek n-stem nouns (especially proper names) formed from adjectives, e.g. Latin Catō (genitive Catōnis) literally "the sly one" < catus "sly", Greek Plátōn literally "the broad-shouldered one" < platús "broad". Verbs In contrast, the verbal conjugation system is quite conservative. The majority of Proto-Indo-European verbal classes and categories are represented in some manner in Tocharian, although not necessarily with the same function. Some examples: athematic and thematic present tenses, including null-, -y-, -sḱ-, -s-, -n- and -nH- suffixes as well as n-infixes and various laryngeal-ending stems; o-grade and possibly lengthened-grade perfects (although lacking reduplication or augment); sigmatic, reduplicated, thematic, and possibly lengthened-grade aorists; optatives; imperatives; and possibly PIE subjunctives. In addition, most PIE sets of endings are found in some form in Tocharian (although with significant innovations), including thematic and athematic endings, primary (non-past) and secondary (past) endings, active and mediopassive endings, and perfect endings. Dual endings are still found, although they are rarely attested and generally restricted to the third person. The mediopassive still reflects the distinction between primary -r and secondary -i, effaced in most Indo-European languages. Both root and suffix ablaut is still well-represented, although again with significant innovations. Categories Tocharian verbs are conjugated in the following categories: Mood: indicative, subjunctive, optative, imperative. Tense/aspect (in the indicative only): present, preterite, imperfect. Voice: active, mediopassive, deponent. Person: 1st, 2nd, 3rd. Number: singular, dual, plural. Causation: basic, causative. Non-finite: active participle, mediopassive participle, present gerundive, subjunctive gerundive. Classes A given verb belongs to one of a large number of classes, according to its conjugation. As in Sanskrit, Ancient Greek, and (to a lesser extent) Latin, there are independent sets of classes in the indicative present, subjunctive, perfect, imperative, and to a limited extent optative and imperfect, and there is no general correspondence among the different sets of classes, meaning that each verb must be specified using a number of principal parts. Present indicative The most complex system is the present indicative, consisting of 12