Imasaddassa ca

1. Assa = ima + sa (“ima” becomes “a” (§177); ‘s’ is inserted (§61)).
2. Asmā = ima + smā (“ima” becomes “a” (§177)).
3. Asmiṃ = ima + smiṃ (“ima” becomes “a” (§177)).
4. Assaṃ = imā + smiṃ (‘ā’ of “imā” is named ‘gha’ (§60); ‘smiṃ’ becomes ‘saṃ’ (§179); ‘s’ is inserted (§62); “ima” becomes “a” (§177)).
5. Assā = imā + sa (‘ā’ of “imā” is named ‘gha’ (§60); ‘sa’ becomes ‘sā’ (§179); ‘s’ is inserted (§62); “ima” becomes “a” (§177)).

Parallel forms (with §177 applied / not applied):

1. Assa, imassa
2. Asmā, imasmā
3. Asmiṃ, imasmiṃ
4. Assaṃ, imissaṃ
5. Assā, imissā

What is the purpose of saying “of the [base] ‘ima’”? [This sutta does not apply when there is no “ima”, such as in:] Etissaṃ, etissā.