At this point a difference emerges. Since the relative determiner is replacing the possessive determiner, when the relative determiner is fronted, the noun it modifies must also be fronted. relative determiner fronting: the man [whose wife you –pres [+2 –sg] be admire –ing]
-pres [+3+ sg] be a wTester
Morphological rules: The man whose wife you are admiring is a wTestler.