Compare and you'll see they're not all the same (Keep them LARGE)

Find the odd-one-out...

Exist and in the right positionExist and in the right positionDoesn't existDoesn't existExist and in the right positionExist but in the wrong positionExist but in the wrong positionDoesn't existExist and in the right positionExist but in the wrong positionDoesn't existExist but in the wrong positionExist but in the wrong positionDoesn't existExist but in the wrong positionDoesn't existExist but in the wrong positionDoesn't existExist but in the wrong positionExist but in the wrong positionDoesn't existExist but in the wrong positionDoesn't existDoesn't exist

...Oh, and explain why of course ;)