If there is a split between 1st versus 2nd/3rd person marking in modal categories, then it is more likely to occur in: (a) optative than in indicative; (b) irrealis than realis; (c) volitional than involitional modality .
Standardized
IF there is a split between 1st versus 2nd/3rd person marking in modal categories, THEN it is more likely to occur in: (a) optative than in indicative; (b) irrealis than realis; (c) volitional than involitional modality .
Can easily be redone as an implication, like in #1885.