Random flower seedling ID

Now for some less distinctive seedlings. They may not be identifiable yet, but I thought it might be useful to see the seed leaves and true leaves. In any case, I will endeavor to keep them growing until they help me out by growing flowers.

I've tried to center or support the seedlings in questions - with varying degrees of success.

Seedling 1
   

Seedling 2
   

Seedling 3
   

Seedling 4 (two of the same?)