BTW Isn't FULLHAND a bit of a hassle and finicky.
While the first example was a bit easy, try this which I alluded in the first thread. South after winning lead in hand leads to A♠ then tries ruffing finesse discarding a club! So defenders attack clubs and the contract is made. How does East signal for diamonds assuming he wants that listed as a signal on the system card- it would need specific limits for use?
BTW This is from Winning Declarer Play by Dorothy Hayden Truscott and I bought it at a sale for $4.

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lead: 9 ♥