well, as there are no words in the English language that fit the letter pattern in your question, my "perhaps" was a suggestion that you rethink your "U"! :)
hi dr b
After I posted my last note, I relooked over all I had filled in so far , you were right (sorry) I had put in a wrong Chinese City instead of the obvious Shanghai, and as everything else fitted in with it I was stuck.
Thanks again for your help, I think I will come to you first next time - he! now all I have to do is to remember to post my entry and you never know, I may win some time.
Many thanks