1. The answer is, as Kjoonlee also says, entirely phonological rule . 2. Such phonological rules may continue to apply for an indefinite amount of time. 3. Pronunciation may also deviate from normal phonological rules . 4. Phonological rules may change the phonemes involved.5. No phonological rule is applied in the declension of " talo " ` house '. 6. It alternated with its syllabic counterpart in accordance with a phonological rule known as Sievers'law. 7. Notably, however, the resulting stem is reduced according to the dialect's phonological rules . 8. The last vowel is lengthened even in writing if it is pronounced and it is required by phonological rules . 9. It seems unlikely that this is a correct and complete description of the actual phonological rules underlying laryngeal deletion. 10. Consonants may also occur long ( geminate ), but their occurrence is generally predictable by regular phonological rules .