[adrian_b]

The orderings of the 27 consonants of the Ugaritic alphabet and of the 22 consonants of the Phoenician alphabet are identical, not just roughly the same.

The difference is just that 5 consonants are missing from the Phoenician alphabet in random places: between gamma and delta, between kappa and lambda, between mu and nu, between nu and xi, and between sigma and tau.

It is known with which other consonants the deleted consonants were merged. For example Ugaritic had "s" and unvoiced "th" like in "thin", while Phoenician pronounced both as "s" and kept only the sigma letter.

(I have used the names of the letters as used by the Greeks, as those are more familiar for most people)

The Ugaritic alphabet also used for certain purposes 3 supplementary signs, invented later, and which were added after the original 27 consonants.