More a concept question than a direct coding one. But say I had a dictionary akin to this one.

```
Dict = {'A':1, 'B':3, 'C':3, 'D':4, 'E':1}
Dict2 = {}

```

And I wanted to take all instances were two keys had the same value, and put them in a different dictionary, what sort of process be the most efficient? I've tried measures like

```
for value in Dict.items()
        for a in value:
            if a != b:
                continue
            else:
                Dict2.append(a)
                continue

```

But to no luck.