Barnevelder - 9 week old chicks What sex do I have?

[Downunder mob]

Hi,
I was sold these 2 as females but looking at the combs I'm not so sure. I am new to chickens and do not have all that much of an idea. Image 2-7 bird on the left. Image 8-13 bird on right.
I am unable to have roosters. Any thoughts? Thanks.

 

[Skyle]

2 cockerels

 

[Downunder mob]

2 cockerels

Thank you Skyle.
I traveled a bit to get these so am a bit disappointed but they will take them back if Roos

 

[MysteryChicken]

Yep, both cockerels.

 

[Painted Calls]

Definitely cockerels.