C7(1-3-5-b7)Cm7(1-b3-5-b7)Cm7-5(1-b3-b5-b7)Cdim7(1-b3-b5-6)
C大小七:135b7 (C7)C小七:1b35b7 (Cm7)C减小七:1b3b5b7 (Cm7-5)C减七:1b3b5bb7 (Cdim7)
以七个基本音集,分别为根音、三音、五音、七音写出大小七,小七,减小七,减七四种七和弦的原位和弦
