If the verb agrees with subject and object and there are forms with the following arrangement of agreement affixes: s-o-V and s-V-o, then o-V-s forms occur as well.
Standardized
Whenever the verb agrees with subject and object, IF the agreement affixes can occur in the orders s-o-V and s-V-o, THEN they can also occur in the order o-V-s.
And how many languages have the implicans as well as the implicatum orders? Can’t be many.