(a). If ten wins the trick:—
Holding more than two small, follow ten with knave; holding two small, follow ten with queen; holding one small, follow ten with king.
(b). If ten forces ace:—
Holding more than one small, follow ten with knave; holding one small, follow ten with queen.
In case b, ten cannot be followed with king, as then partner would be doubtful as to the position of the queen.
King, queen, knave, ten, only.
Lead king, then ten, in all suits.
Queen, knave, exactly, are marked in the leader's hand.
Here the leader runs the risk, in plain suits, of being blocked if his partner holds ace, and one small one, originally. There is a conflict of advantages and disadvantages; in favour, the Author believes, of the lead of king, if the suit contains only four cards (compare p. [67], bearing in mind that, when that was written, the lead of any card rather than a king, from suits of more than four cards, had not been the subject of consideration).