Conga Nested If statements

Just wondering if anyone can point me in the right direction for info on the above; is it even possible to insert a possible 3 outcomes for a mergefield on a Conga template?

I am looking to create a merge field to say {IF Record Type = A then "A", or if Record Type = B and Field C = C then "B" or else "C", so I have three sets of criteria and three possible outcomes.

Have searched high and low and can't find any great step by step guides to this.