Here is how the most common chords are constructed. Notes in parentheses, ( ), imply that they can be dropped from the chord in certain cases.

Name	Note 1	Note 2	Note 3	Note 4	Note 5	Note 6	Note 7
Major	R	3	5
Minor	R	b3	5
Sus4	R	4	5
b5	R	3	b5
Diminished	R	b3	b5
Augmented	R	3	#5
Major6	R	3	5	6
Minor6	R	b3	5	6
7	R	3	5	b7
7sus4	R	4	5	b7
Minor7	R	b3	5	b7
Minor7(9)	(R)	b3	(5)	b7	9
Minor7(9,11)	(R)	b3	(5)	b7	9	11
Major7	R	3	5	7
Major7(9)	(R)	3	(5)	7	9
Major7(#11)	(R)	3	(5)	7	9	#11
Major7(13)	(R)	3	(5)	7	13
Major7(9,13)	(R)	3	(5)	7	9	13
Major7#5	R	3	#5	7
Major7#5(9)	(R)	3	#5	7	9
MinMaj7	R	b3	5	7
MinMaj7(9)	(R)	b3	(5)	7	9
7b5	R	3	b5	b7
Minor7b5	R	b3	b5	b7
Aug7	R	3	#5	b7
Dim7	R	b3	b5	6
Add9	R	3	5	9
MinorAdd9	R	b3	5	9
Major6(9)	(R)	3	(5)	6	9
Minor6(9)	(R)	b3	(5)	6	9
7(9)	(R)	3	(5)	b7	9
7(b9)	(R)	3	(5)	b7	b9
7(#9)	(R)	3	(5)	b7	#9
7(13)	(R)	3	(5)	b7	13
7(b13)	(R)	3	(5)	b7	b13
7(9,13)	(R)	3	(5)	b7	9	13
7(b9,13)	(R)	3	(5)	b7	b9	13
7(#9,13)	(R)	3	(5)	b7	#9	13
7(b9,b13)	(R)	3	(5)	b7	b9	b13
7(#9,b13)	(R)	3	(5)	b7	#9	b13
7(9,#11)	(R)	3	(5)	b7	9	#11
7(9,#11,13)	(R)	3	(5)	b7	9	#11	13