What is the combination all the monsters on mix a monster

i can only tell you how to get the robot dinosaur: Put in the spring, cheese slice, snail, and sock into the potion.

3,4,5,6
2,4,5,6
2,3,5,6
2,3,4,6
2,3,4,5
1,4,5,6
1,3,5,6
1,3,4,6
1,3,4,5
1,2,5,6
1,2,4,6
1,2,4,5
1,2,3,6
1,2,3,5
1,2,3,4

1=frog 2=sock 3=rock 4=spring 5=cheese 6=snai