Words similar to years--but

Example sentences for: years--but

How can you use “years--but” in a sentence? Here are some example sentences to help you improve your vocabulary:

The evidence for this, he says, was gathered over many years--but what evidence does he provide?
The complaint is not that Bush reversed his story--there is no contradiction in being drug-free for seven, 15, and 25 years--but that he reversed his spin, obliging his advisers to "defend the change of strategy."