Thus, the notions of 'syntactic' and 'morphological' specifiers and complements are crucial for the linearisation of syntactic structure and its mapping to the morphological component.
So when a sentence like that in the diagram below is pronounced, 'John' precedes the V-v-T chain, which in turn precedes 'Mary', the latter being the specifier of V. However, English is a VO language, which means that the morphological word 'loves' associated with the V-v-T chain is spelled in v, deriving the correct word order.
These suffixes immediately c-command the root word and are ordered in accordance with the principle of semantic scope.
To generate the proper linear structure, left-head movement is applied recursively to include the morphemes that c-command a given root.
Empirical arguments for the Mirror Principle are provided by Baker's (1985) account for the distribution of a number of valence changing operations in Mohawk, showing that the linear order of morphemes is related to the syntactic hierarchy in that morphemes are linearized in a reverse order to how they appear in a syntactic structure.