King, knave, nine, &c. (in trumps).
If ten is turned up to your right, lead knave.
King and small ones.
From all strong suits headed by king, other than those already enumerated, lead a small one (the fourth-best if an American Leader).
Queen, knave, ten, nine, with or without others.
Lead queen, then nine, even though one of your others is the eight.
With more than four in suit, lead ten after nine.
With only four in suit, lead knave after nine.