The following cases are analysed as multi-word lexical units by means of certain grammatemes:
modal predicates.
Modal predicates (modal verb + infinitive, see Section 9.1.1, "Modal predicates"), are represented by a single node; however, their t-lemmas are not multi-word (in contrast to cases described in Section 3.1, "Multi-word t-lemma"). The t-lemma assigned to a modal predicate is the infinitive alone; the information regarding the predicate's modality is encoded in the value of the deontmod grammateme (see Section 5.10, "The deontmod grammateme (deontic modality)").
Examples:
muset odejít (=must leave) is represented by a single node with the t-lemma odejít (=leave);
chci pracovat (=(I) want to work) → pracovat (=work).
NB! An exception to the rule are the cases when both the modal verb and the infinitive are negated (e.g. nemůžeš nepřijít (=(you) cannot not_to_come), and several other cases (see Section 9.1.1, "Modal predicates").