Sometimes but rarely it is found in the following construction:

4. For.

5. At, (future time),

6. Concerning.

We have observed mo used by foreigners in sentences in which for would appear to be pleonastic, as open the door for me; dress this wound for me, &c. We have no hesitation however in affirming that mo is never used in such a construction.

7. Used with a verbal noun to denote a preparedness, &c., for some future act; e. g.