[Typo3] how to display access-groupname after menuitem?

[Steffen Matzke]

hello group,

i want to display the name of the usergroup that have access to a 
menu-item behind this corresponding menuitem in the front-end. So a 
user, who has all access rights, is able to get an overview of the set 
access rights in the frontend.

this is my current solution, which only displays the usergroup-number:

page.10.marks.V_MENU.2.NO.after {
        field = fe_group
        wrap = <div style="font-size: 9px; color: #666666; font-family: 
Arial, Helvetica, sans-serif; display: inline; margin-left: 3px;">|</div>
        }

how can i display the usergroup name. is this join possible?

thank you very much!
steffen