There aren't any open-jaw fares are such.

Open-jaw fares are typically constructed using round-trip fares. If you're flying AAA-BBB on 1 November and then CCC-AAA on 8 November, you add these fares together and divide by two:-

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Note the directionality of the fares; the second one is not a CCC-AAA-CCC fare.
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You can also get open-jaw fares constructed by adding one-way fares together, but IME this is a less common way because combining round-trip fares on a half-round-trip basis is more likely to result in a lower fare.