I'm working on an application that has localized strings for the UK, specified in `res/values-en-rGB/strings.xml`. My default string implementations, for the US, are in `res/values/strings.xml`.

Now, I'm adding additional localizations for Canada in `res/values-en-rCA/strings.xml`. I would **like** the application to behave as follows: If a user's device is localized to Canada (or their language is set to `English(Canada)` or `French(Canada)`), check if we have a string in `en-rCA`, and if not, fallback to the string in my default `strings.xml` file. **However,** my application currently fallbacks to strings from `en-rGB` when the device is set to a Canadian locale and the string is not found in `en-rCA`. Therefore, I have two questions:

1. How can I configure my app such that a device with a Canadian locale searches for a string in `en-rCA` and then, if it cannot find it, defaults to the string in my default `values` folder *rather* than `en-rGB`?
2. How can I ensure that a device whose language is set to `French (Canada)` defaults to `en-rCA` rather than my default `values`, as it currently does?

I would be happy to provide an example if it would be helpful. Thanks!