Franklin's proposed alphabet included seven letters to represent vowels. This set consisted of two new letters, in addition to five letters from the existing English alphabet:
α, e, i, o, u. The first new letter was formed as a ligature of the letters
o and
α – – and used to represent a sound that is roughly as transcribed in the
International Phonetic Alphabet (IPA). The second new vowel letter,
ɥ, was used to represent or . Franklin proposed the use of doubled letters to represent what he called long vowels, represented by modern phonemes in IPA thus: long versus short (or, in his notation, versus ), long versus short (
ee versus
e), and long for short (
ii versus
i). In his examples of writing in the proposed alphabet, Franklin contrasts long and short uses of his letter
e, with the words "mend" and "remain" which, respectively, he spelled
mend and
remeen. In this system,
ee is used to represent the sound in "late" and "pale". Likewise,
ii is used to represent the sound in "degrees", "pleased", and "serene". Sometimes Franklin's correspondences written in the new alphabet represent a long vowel not using a double letter but instead using a letter with a
circumflex, ◌̂, as when he represents the sound in "great" and "compared" with
ê instead of
ee. Franklin's long-short vowel distinctions appear not perfectly identical to the same distinctions in 21st-century English; for example, the only word shown to use is the word
all, but not other words that in modern notation would use . This discrepancy may reflect Franklin's own inconsistencies, but, even more likely, it reflects legitimate differences in the English phonology of his particular time and place. Franklin does not make a distinction between the modern and
phonemes (in words like
goose versus
foot), which likely reveals another difference between 18th-century English pronunciation versus modern pronunciation. ==Consonants==