Resonance Structures for a Certain Molecule

[alingy1]

Here attached is a question from my exam. My TA removed 1 point out of 7 for a reason. Can anyone decipher for what? There's the writing in red but it is illegible to me. I don't understand to what he refers by 8 and 6 t or +, or whatever he wrote.

http://imgur.com/igpyp8V

Or can anyone write a full answer?

 

[Greg Bernhardt]

I'm sorry you are not finding help at the moment. Is there any additional information you can share with us?

 

[happysmiles36]

My guess on what he wrote is "bad all have fc (formal charge)". I hate it when the markers writing is illegible.

 

[epenguin]

My reading is "but all have 8t". I don't know what t is but he has written 6t on some structures and 8t on others.