T-Square: 2 squares + 1 opposition forming a T shape
Grand Trine: 3 trines forming an equilateral triangle
Grand Cross: 4 squares + 2 oppositions forming a cross
Yod (Finger of God): 2 quincunxes + 1 sextile
Kite: Grand Trine + 1 opposition
Mystic Rectangle: 2 trines + 2 sextiles + 2 oppositions
Stellium: 3+ planets conjunct
Types of aspect patterns (configurations of 3+ bodies).