Rhyhorn, Rhydon, and Rhyperior

Koffing and Weezing

Lickitung and Lickilicky

Tyrogue, Hitmonlee, Hitmonchan, and Hitmontop

Cubone and Marowak

Exeggcute and Exeggutor

Voltorb and Electrode

Krabby and Kingler

Drowzee and Hypno

Onix and Steelix