Like iI said imI'm not sure its possible. You could try to use a different strategy instead of matching any number of things in a set match anything as long as it does not violate the set. For this you need to use lookaheads. Unfortunately lookaheads do not have infinite width so this may not work out for you very well. In essence regular expressions aren't really up for this job.
A alternate strategy opens if you have some character or position that you can matcmatch in the beginingbeginning and end of your text. like start of paragraph and end of paragraph then you can easily match a range that MUST start/end with that character and it will discard any such things that contain anything invalid.
