It's pretty common for signs to be rearranged or omitted for aesthetic reasons. There was a strong preference for signs to be grouped in boxes. For example, if

It's pretty common for signs to be rearranged or omitted for aesthetic reasons. There was a strong preference for signs to be grouped in boxes. For example, if we were find 𓅨𓂋 wr, it would almost always be written with 𓂋 underneath 𓅨. With the 𓋴 combinations, we're combining with symbols that are mostly horizontal with a vertical symbol. Sure, you could stack them, flip them to be parallel, or put them after each other like I did with 𓅨𓂋 wr. However, some scribes probably thought combining them in crosses looked better than any of the alternatives.