**Pseudo Code**
function LCS(s1, s2):
n = len(s1)
m = len(s2)
L = empty_array(0..n, 0..m)
for i := 1 to :n
for j := 1 to m:
elif s1[i - 1] == s2[j - 1]:
L[i][j] := add character s1[i - 1] to array L[i - 1][j - 1]
else:
L[i][j] := max(L[i - 1][j], L[i][j - 1], key=len)
return L[n][m]
s1 = "ɔ l ɪ z s ɛ d w ɪ ð aʊ t ə w ə d" of length n
s2 = "ɔ l w ɪ z s ɛ d w ɪ ð aʊ t ə w ə d" of length m
lcs = LCS(s1, s2)
print("Longest Common Phoneme Sequence:", lcs)
***Output
Longest Common Phoneme Sequence: ɔ l ɪ z s ɛ d w ɪ ð aʊ t ə w ə d
***