(c.) If nine forces ace, but not queen, king must be led after nine. Then (third lead),
With more than four in suit originally, lead ten after king.
With only four in suit, lead knave after king.
King, knave, ten, with one or more small ones.
Lead ten.
If the ten wins the trick, lead a small one after ten (the original fourth-best if an American Leader).
If the ten forces the queen, or both queen and ace:
With more than four in suit lead knave after ten.
With four in suit, lead king after ten.
If the ten forces the ace, and not the queen, king must be led after ten.