Notes on Downstep
1. Downstepb rule applies only to disyllabiverb stems with an internal liquid consonant (/n, r/), i.e. to so-called N/R-stems.
2. Downstepa-rule is exceedingly frequent. Due to its frequency, the melody variation resulting from Downstepa, is one of the most pervasive and most typical feature of Akan words, sentences, and discourse.
3. Downstep resulting from the deletion or elision of a Low-tone syllable is always of Downstepa type.