To avoid overfitting the system by long consonant clusters, we perform segmentation based on the English q sequence, but categorise the rules based on their Persian segment counterparts.
for the pair ( È ô ,merkel) with a e2p =((m,),(e,ε),(r,È),(k,ô),(e,ε),(l, )), these rules are generated (with category patterns given in parenthesis): → m (C), È ô → rk (C), → l (C), È ô → merk (C), È ô → rkel (C).