[UPHPU] regex help for a rewrite

[Wade Preston Shearer]

This is what I have so far:

^(([^/][^-][^/])+)((/-/)(([^/][^-][^/])*))?$


Here is what I am trying to match in English:

(anything except the string "/-/")(optional: the string "/-/" followed  
by anything except the string "/-/")
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