Find the word that completes group b. in the same way as the word in brackets completes group a. You will find a pattern between the two words in the first group, like the 1st letter from the 1st word being followed by the same numbered letter from the 2nd word. These can be quite tricky to work out, so a pencil and paper is a good idea to help you. If you are puzzled, take a good look at the example to get you started.

To make a word, look for patterns between the two words in the first group, like the 1st  letter from the 1st word being followed by the same numbered letter from the 2nd word. See if you can find the word that completes group b. in the same way as the word in brackets completes group a. Use a pencil and paper to work it out.