How to depict negation in an icon (NOT)?

How does one indicate a negation on an icon? Let me explain...

Suppose you have a todo list application with a filter bar (for searching and filtering what tasks to see in the list), and the filter bar has a status selection, thus:

enter image description here

The status filter can have one of these values for

"SHOW ME ALL TASKS THAT ARE":

  1. All Status Tasks (irrespective of status)
  2. Not Started Tasks
  3. NOT Not Started Tasks (Everything EXCEPT Not Started Tasks)
  4. In Progress Tasks
  5. NOT In Progress Tasks (Everything EXCEPT In Progress Tasks)
  6. Complete Tasks
  7. Not Complete Tasks (Everything EXCEPT Complete Tasks)

For the negations I've used a RED color for the icon. The icons I've used for this are the following:

enter image description here - All Status
enter image description here - Not Started Tasks
enter image description here - NOT Not Started Tasks
enter image description here - In Progress Tasks
enter image description here - NOT In Progress Tasks
enter image description here - Complete Tasks
enter image description here - NOT Complete Tasks

As you can see, the red negation color makes it hard to see and doesn't REALLY clearly and intuitively indicate a negation, in my opinion. You would have to be told that it meant negation.

Is there some clearer and more intuitive way of depicting a negation in a filter icon?

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