In a code language 256 means 'you are good', 637 means 'we are bad', 358 means…

Solution:

Use overlaps between the given coded phrases to identify which digit maps to which word.

1. Compare 256 ('you are good') and 358 ('good and bad'): the common digit is 5, so 'good' = 5.

2. Compare 637 ('we are bad') and 358 ('good and bad'): the common digit is 3, so 'bad' = 3.

3. From 358, after removing digits for 'good' (5) and 'bad' (3), the remaining digit is 8, so 'and' = 8.

4. As a check, 256 and 637 share digit 6, so 'are' = 6; the remaining digits 2 and 7 correspond to 'you' and 'we' respectively.

Final mapping:

• 'good' = 5

• 'bad' = 3

• 'and' = 8

• 'are' = 6, 'you' = 2, 'we' = 7 (optional extra mappings)