Why does The Logic of English series have 74 phonograms when most Orton-based programs have only 70?
The 74 basic phonograms identified in Uncovering the Logic of English originate from the 70 basic phonograms identified by Dr. Orton. I have expanded the original list by adding four phonograms: augh, bu, gu, and cei.
Augh, bu, and gu were added because they are found in commonly used words encountered by beginning readers.
The phonogram augh is found in common words such as daughter, taught, and caught. These words are used repeatedly in early children's readers and are foundational vocabulary terms. The phonogram bu also appears early in words such as buy, build, and built. The phonogram gu is found in words like guide, guilt, and language.
The creation of the phonogram cei is a way to solve the problems with the commonly taught rule: Use I before E, except after C, when it says long /a/, and in some exceptions. The exceptions to this rule are numerous. Nevertheless, many people have found the rule beneficial for spelling because it aids students in remembering how to spell the "except after C" words. Rather than memorizing a long rule that has numerous exceptions, the benefits of the rule can be retained by creating the phonogram cei.