Copala Triqui has a construction in which predicates of emotion and psychological state appear with one of two special auxiliary verbs, derived historically from verbs meaning 'see' and 'look'. This paper details the constraints on the syntax of the emotion auxiliary construction and contrasts it with the ordinary verbal syntax of the language. (Ethnologue code TRC)
Broadwell, George Aaron, "The Copala Triqui auxiliary construction for emotional and psychological predicates" (2013). Anthropology Faculty Scholarship. 1.