Illustrating the possibilities using alteration on a C triad (three note chord), using accidentals and slashes rather than writing out all 27 possibilities.
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<p>One note
</p>
<ol><li>0,4,7 C major</li>
<li>e,4,7 E minor</li>
<li>1,4,7 C# diminished</li>
<li>0,3,7 C minor</li>
<li>0,5,7 Csus</li>
<li>0,4,6 C flat five</li>
<li>0,4,8 C augmented</li></ol><p>Two notes
</p>
<ol><li>0,3,6 C diminished</li>
<li>0,3,8 Ab major</li>
<li>0,5,6 Viennese trichord on C</li>
<li>0,5,8 F minor</li>
<li>e,3,7 G augmented</li>
<li>e,5,7 G dominant fragment</li>
<li>e,4,6 Em9 fragment</li>
<li>e,4,8 E major</li>
<li>1,4,6 E9 fragment</li>
<li>1,4,8 C# minor</li>
<li>1,3,7 Eb7 fragment</li>
<li>1,5,7 Italian sixth</li></ol><p>Three notes
</p>
<ol><li>e,3,6 B major</li>
<li>e,3,8 G# minor</li>
<li>e,5,8 F diminished</li>
<li>e,5,6 Viennese trichord on B</li>
<li>1,3,6 D#7 fragment</li>
<li>1,3,8 C#9 fragment</li>
<li>1,5,8 C# major</li>
<li>1,5,6 F#7 fragment</li></ol></div>
<a href="//commons.wikimedia.org/wiki/User:Hyacinth" title="User:Hyacinth">Hyacinth</a>
<span class="int-own-work" lang="en">Own work</span>