I know this wiki is kinda dead... but check my project if you want, it simulates encounters, you can find perfect and potent coromons (Cubzero, Toruga, Nibblegar, Swurmy, Lunarpup and Lumon), you can use potent scent, choose for the encounter to be a single coromon or a group of two and this took me some time to make.
Coromon Encounter Simulation on Scratch (mit.edu)
the project also has an easter egg :>