Begin with 5♣ 6♦ 7♥
The ranks form consecutive positions and the suits differ. Name the category after observing both patterns, rather than assuming that every sequence must share one suit.
Change the suits
Use 5♣ 6♣ 7♣ instead. The consecutive rank pattern remains and all suits now match. Explain why it is a pure sequence. The cards are still three distinct physical cards.
Break the rank pattern
Now use 5♣ 9♣ J♣. One suit remains, but the ranks are not consecutive. This is the distinction between colour and pure sequence.
Test the reason
Cover the category labels and state two observations for each example. Then compare your answer with the hand rankings. Do not make the example into a claim about how a particular app will resolve a different table profile.