Boil the eggs hard, peel them and cut them into slices. Wash the tomatoes, remove the radish leaves, clean the radishes; Cut tomatoes into quarters and radishes into slices. Clean and wash the onions and cut into thin rings. Drain the corn in a colander. Put all ingredients in a bowl and mix with the mayonnaise; Season to taste with salt, pepper and a pinch of paprika and let it steep. Possibly season again.