Rock in D minor — arpeggios
The G major borrowed from the Dorian mode (already identified on this grid's chord version) comes through especially well in an arpeggio: the note that sets this G apart from the Gm expected in strict natural minor (a natural B rather than a flat one) is played on its own, not buried inside a strummed chord.
Tips
Spot the note that gives G its Dorian colour by isolating it from the rest of the arpeggio.
Play each chord slowly, one note at a time, before looking for fluency.
Compare by ear with a strict natural-minor arpeggio (like the catalogue's A minor grid) to really hear the colour difference.
Chord progression — Dm
Bar 1
Dm
Bar 2
Am
Bar 3
G
Bar 4
C