English used to be mostly phonetic in its Old period (Ænglisc spræc). The only issues were the long sounds: ā, ē, ī, ū, õ, etc, and the fact that “c” in certain positions was a č sound. There was also “þ”, which makes the “th” sound. However, enter the Normans, and suddenly the alphabet loses most of the sense that it ever had (“France” has a “c” that makes an “s” sound, but then “sense” somehow has the same sound at the end, but represented with an “s”). Oh, if only that were true today.