Assertion: auxiliary verb's form | /r/HasProperty | impossible
Facets:
Source sentences:
text: (The forms with an asterisk (*) are impossible, at least with respect to the relevant sense of the verb; these phonemes may by coincidence be attested with respect to a homograph [as with "canning" = "the act of preserving and packaging in cans"].)
text: Future tense forms, however, are impossible and can only be expressed periphrastically.