General :: Find Records That Match Criteria Of Multiple Fields

Using sql or access query I would like to create an expression that aggregates the first field and I would like to see all records grouped by the relationship with another field. Let me show an example.

My query shows:

field1 field2
apple a
apple b
banana a
carrot a
carrot b
dog b
elephant b

I would like my query to now display a third field and group field :

field1 field3
apple both
banana a
carrot both
dog b
elephant b