I'm not distinct on the last bit of the sentence, "which one particular is the best". I thought it is comparable to your clause in "I'm planning to cover what they are", the order of object as well as the verb is reversed (I forgot exactly what the grammatical expression https://bestcollagenfillers59098.blogdigy.com/not-known-factual-statements-about-fillers-on-the-cheeks-55540583