Page 576 - Makino,Tsutusi.DictionaryOfIntermediateJGrammar
P. 576
502 tokoro
V tam (i.e., Vinf-past ra) can be used in place of Vinf .past tokoro, as in [I].
However, V tokom is more formal than V tara and is usually used in formal
speech and writing, while V tam is used in both formal and informal lan-
guage.
It is noted that V tara does not have the restrictions listed in Notes 1, 2, and
3. Thus, the following sentences are all acceptable.
(+ - tara (DBJG: 452-57))