We are certain you already caught this:
“People think that a word like humuhumunukunukuapuaa, the state fish of Hawaii, is hard to spell,” Bailly said. “It’s not hard to spell. It’s got a particular pattern. It’s unique. That makes it particularly easy.
“I think recede is a good example of a word that’s hard to spell. Because you’ve got the -ede or the -eed, you’ve got the C or the S. It’s a common word, but people can’t spell it.”