Who loves bears?

FO-8 Who loves bears?

Time to prove that you love also bears! 

Create a simple regular expression pattern that matches if a string (it could be a whole sentence or just one word) contains the word 'bear' inside (ignore case sensitivity). So the regex should accept:

1. bear

2. I love watching bears fishing salmons in Kamtschaka.

But not!

1. My morning routine is to shave my beard.

2. The heat is unbearable!