Here is D, F and G.
This one opens up a new ear training challenge – notes that are only two frets apart (whole tones, as they are called in music theory). Take your time with this new level of complexity. Go slow and let the pitches sink in to your musical mind.
Remember, scaffolding is available if you need help.
Don’t forget to do Musical Gym. It will help you internalize the ear training as well as increase your picking and fretboard skills.