This is just so I remember:
Magnetic Duo = Raph and Leo
Brains and Brawn = Raph and Donnie
Sunset Duo = Raph and Mikey
Disaster Twins = Leo and Donnie
Baja Blast Duo/Portal Pals= Leo and Mikey
Smarts and Crafts/PB&J Duo = Mikey and Donnie