[sw-l] Group 1 handshape symbol differentiation

[Natasha Escalada-Westland]

Could someone please explain to  me the differences between the following two symbols and how they might be used (or give examples of signs).
 

 
 

 
It seems to me that one of them  might be physically or logically impossible, but I am fairly new at this.
Thank you! Natasha Escalada-Westland, M.Ed. (D/HH), Macromedia Cert.Westland Progeny, www.westlandprogeny.comwww.westlandasl.com 
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