When in combat, I'd recommend that whoever is involved in said battle should use a pad we could share among the members of this RP. This way, there won't be a spam of three liners since there is only so much you can write when your character is locked in turn based combat. 

Of course, if you're interacting with another, or more than one other character, writing a post together would also be highly effective. 

That's my preference ^^.