The Quenya Verbal System (QVS) of 1948 had an adjective ᴹQ. alanwa “full-grown, mature, adult” as an example of a perfective participle of the verb ᴹQ. ala- “grow” (PE22/112). However, elsewhere in this document {ala- >>} ᴹQ. ola- “grow” (PE22/116 note #94), and Tolkien also had an adjective ᴹQ. olinwa “fully grown, adult”, where the i was because “-nwa ‘perfective’ does not tolerate ‘imperfective’ ā” (PE22/116).