Hi Pippa,, I always worry when I see a query that is 4 hours old. The sheer brain power on this site solves most questions. This raises questions as to whether you could possibly give some more info.
Could you tell us the name of the crossword? Anyone who does that particular crossword will zoom in and answer the question in minutes.
For those of us who do not have the crossword, it would help if you could possibly let us know where you are getting your 'i-l-t' from. The fact that you have not had a reply would suggest that there may be a problem with one of your letters in the query. If we know what they are, we can maybe help. Keep up the crossword work.
Sincerest wishes