The canonical realization of "stem" accomplished via Generalized Alignment [McCarthy, John J. and Prince, Alan S., 1993b, Generalized alignment, in Booij, G. E. and van Marle, J. (eds.), “Year-book of Morphology 1993”, Dordrecht, Kluwer, pp. 79-153], is a prosodic word (PrWd). [...] HEADEDNESS (PrWd) Every PrWd must contain a foot. - McCarthy & Prince (2004), a pag.407