How do I get the second or third fields from the list form.fieldnames ?

In a related post :

I have this code :

<cfloop index="i" list="#form.fieldnames#" delimiters=",">

When I use cfdump to display all the form variables, the struct fieldnames are :

urdn_action,del/8084/1,comments/8084/1,xxxxxxxxx...etc

The first fieldname, urdn_action, is a radio button.

How do I get to the second fieldname, del/8084/1, or the third one, comments/8084/1 ?

I need to manipulate either the second or third field to extract 8084 and 1, to do further processing.  My code won't work now because the fieldname urdn_action is the first form fieldname and is gettting in the way. How do I skip it to get to the others ?

Thanks