`!` works with only character range or a single character. 

I have a string say, `abchello`. I would like to match something `bcdhello`. i could write something like this `!a!b!chello`. Now if i write this , it doesnot match `hbhhello`. Which i feel is according to the docs. But my use case requires to use it over a substring or string. Not just the character match. could this be supported or it can be already done?