 The list of words to be included among the syncategoreumata was not always the same. Generally speaking it comprised exclusive words tantum (only), solus (alone), exceptive words such as preter (except), nisi (unless), consecutive words such as si (if) and nisi (if not), the words incipit (begins) and desinit (ceases), the modal terms necessario (necessarily) and contingenter (contingently), the conjunctives an (or), et (and), nisi (unless), in eo quod (in that), and quin (that not). In Peter’s work we also find a discussion of the terms quanto (‘how much’ or ‘as much as’) quam (‘than’ or ‘as’) and quicquid (whatever). Unlike that of some other authors (such as William of Sherwood and Robert Bacon), his list does not include the word omnis.