The spelling of the word "are top heap" is actually incorrect. However, it can be broken down phonetically to understand the correct spelling. "Are" is pronounced as /ɑr/ and should be spelled as "our" in this context. "Top" is pronounced as /tɑp/ and is spelled correctly. "Heap" is pronounced as /hip/ and should be spelled as "heap". Therefore, the correct spelling of the phrase would be "our top heap". It is important to pay attention to pronunciation when spelling words to avoid confusion.