the key change is always that in britain alphabet, the letter “Z” is pronounced “Zed”, though in The usa, “Z” is pronounced “Zee”, As a result the last verse rhymes in different ways. Facebook page https://safaqxbx927211.blog4youth.com/29876751/how-much-you-need-to-expect-you-ll-pay-for-a-good-abc-song-for-kids-phonics