Dieckmann Decarboxylation

Q. In the following reaction sequence, the correct structures of (E), (F) and (G) are:

(*implies ${}^{13}C$ labelled carbon)

1. 
2. 
3. 
4. 

Q. In the following reaction sequence, the correct structures of (E), (F) and (G) are:

(*implies ${}^{13}C$ labelled carbon)

1. 
2. 
3. 
4.