Battles in the Crimea

Does anyone know how many different offensives took place in the Crimean province of the Ukraine?

 

I recently saw 2 part documentary about Crimean front and it was quite interesting, althought contained some errors.
I think there was atleast five different offensives, depending how you count them.

 

there was at least the siege of sebastopol and the offensive towards the sea of azov

 

And these were...

 

Dunno about their names and dont know if they are really separated.

1. Germans original offensive to take Crimea
2. Russian landings at Kerch
3. German counterattack at Kerch
4. German siege & conquer of Sevastopol
5. Russian offensive to take Crimea.

 

The German attack on Sevastapol, i think, was Bustard Hunt