(By Alena Witzlack-Makarevich): "Marking strategies of core participants include both marking by indexing and by flagging (i.e. case or adposition marking). Variations in marking strategies include both variations in the alignment patterns and variations in position (e.g. suffixing vs. prefixing) in case of indexes. This question includes some of the cases referred to as (alignment) split in the literature. Merely different allomorphs of person/number indexes in the same position do not count. Polarity (i.e. positive vs. negative distinction) does not count as a TAM category. Any variation of indexing in the imperative does not count either."