How to extract the 3 words after [yyy] using regex?

[SS1]

Hi,

I need help to extract the 3 words after [yyy] using regex, 

True [xxx] [yyy] Issue with ios phone 11

False [yyy] Issue with android phone

True [yyy] Issue with windows phone

[ITWhisperer]

| rex "\[yyy]\s(?<threewords>\S+\s+\S+\s+\S+)"

[burwell]

| rex "\[yyy\] (?<three_words>\S+\s+\S+\s+\S+)"
| table three_words

This creates a new field called three_words