I am not clear on the last little bit of your sentence, "which a single could be the best". I thought it is analogous towards the clause in "I'm planning to cover whatever they are", the order of object as well as verb is reversed (I forgot what the grammatical https://cashpmkbt.p2blogs.com/35614101/helping-the-others-realize-the-advantages-of-web-design-agency-miami-fl