L134 Leopard frog pleco's - Male or Female?

[plecoman]

Are there any experts that can help me sex these L134's? I can tell some differences in them, but I'm not sure which ones are male and female. If you would, please sex them from left to right. Thanks for any help you can give!

http://i770.photobucket.com/albums/xx344/hillville/Egg%20Tumbler/004.jpg

[Thanusan]

left to right 1 & 2 look like Males to me

[CanadaPleco]

they look pretty small still.