Skiping elements in .msh file

Sergiog

Hello,

I want to write a mesh in .msh fluent format. My problem is that the numbers of my cells are not consecutive. For instance i can have Cell 1, Cell 2 and Cell 4. I've tried to reproduce this situation with the help of a virtual "Cell 3" but when I try to read the file like the following one, Fluent gives me an error:

(12 (7 1 1 1 3)) (12 (7 2 2 1 3)) (12 (7 3 3 0 3)) (12 (7 4 4 1 3))

...because it doesn't assign the same zone for the cells 1,2 and 4. Do you know how can I enter my cells in this way (I mean, in different text lines) in such a way that they belong to a unique zone?

Thank you very much in advance,

Sergio