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It can't be a coincidence is the most popular phrase on the web.

it could be a coincidence 1333,000 results on the web	It can't be a coincidence 1350,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It was weird, yes, but it could be a coincidence. It could just be a coincidence. IT COULD BE A COINCIDENCE, OR AN ANOMALY. I CAN'T BE SURE I knew that it couldn't be a coincidence, so I checked. It could possibly be a coincidence. It could be just a coincidence, some random werewolf travelling through? Or it could be a coincidence. I knew it couldn't be a coincidence.	It can't be a coincidence that Jake keeps landing on a triangle. And it can't be a coincidence she died the day after receiving that video. Mnh Well, it can't be a coincidence that on the same day Hixton's car was taken, he was killed. She knows about vampire stuff, and it can't be a coincidence. It can't be a coincidence that the beast who killed Rebecca and Alistair is back in our lives, can it? It can't be a coincidence that the reporter wrote down the name "Pleiades". mnh. And it can't be a coincidence that you were jumped the same day you were questioned about a homicide.

it could be a coincidence

1333,000 results on the web

It can't be a coincidence

1350,000 results on the web

More popular!

It can't be a coincidence that Jake keeps landing on a triangle.
And it can't be a coincidence she died the day after receiving that video. Mnh
Well, it can't be a coincidence that on the same day Hixton's car was taken, he was killed.
She knows about vampire stuff, and it can't be a coincidence.
It can't be a coincidence that the beast who killed Rebecca and Alistair is back in our lives, can it?
It can't be a coincidence that the reporter wrote down the name "Pleiades".
mnh.
And it can't be a coincidence that you were jumped the same day you were questioned about a homicide.