The Triad Pair Index series catalogs all the possible melodic patterns created by combining two triads. This is the Bass Clef edition.
Volume 1 of the Triad Pair Index list all 720 note combinations from an F Major triad (F A C) and a G Major triad (G B D).
All 720 patterns have an audio example embedded into the book to hear what each one sounds like. Pick and combine different patterns to build your own triad pair lines. Also included in each volume are tables of the relationship of each note in the triad pair to all 12 Major, Minor and Dominant chords.