The ii chord (Re-Fa-La) is related to IV for having Fa and La in common. It most often precedes V patterns. This exercise would be analyzed as: || I | ii | I | ii V | I | ii | V(7) | ii V7 I || While listening to this melody, try to sing the roots of the chords: || Do | Re | Do | Re Sol | Do | Re | Sol | Re-Sol Do ||