Explanation:

- In the language code, each word in English corresponds to a unique code.

- From 'your attention please' = 'puw cuw zuw', 'attention', repeated in all phrases, = 'zuw'.

- 'please pay attention' = 'puw zuw ruw', here 'please' is 'puw' and 'pay' is 'ruw'.

- 'puw' for 'please', and 'zuw' is consistent for 'attention', aligning with observed codes.

- Testing 'pay', as in 'please pay attention' = 'puw zuw ruw', filter known words, find unknown.

- 'ruw' completes sentence, identifying 'pay'.

Thus, the code for "pay" is ruw.