maleficent

I can spin anything... I could make a mass murderer look like a choir boy.

But you'd done a fine job of it yourself. You learned something from the position. that's good for companies to hear.
Questions first:
Why did you actually leave the companies? How long were you at each position? What'd you do at each position? Was each job a stepping stone to the next job? (Can it be spun that way?)

On most job applications, you get about 1 inch to write about why you left, generally left for a better opportunity is the standard response, or In the interview itself, that's where you can sell the reason.

But truth be told, unless you got fired from every position, or spent 3 months working there, and left for more money, people aren't expected to spent 20 years at a company any more.

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