Two forms are clearer in prose than in a table.
● يَفْعَلْنَ remains يَفْعَلْنَ.
● تَفْعَلْنَ remains تَفْعَلْنَ.
Example: هُنَّ يَكْتُبْنَ ← هُنَّ لَنْ يَكْتُبْنَ. The feminine-plural nūn is part of this ending; it is not the removable inflectional nūn of the second group.