Questions about the “Tatiya­vitthā­ra­sutta”

SuttaCentral's Pāli text of SN 48.17, “Tatiya­vitthā­ra­sutta” is, > “Pañcimāni, bhikkhave, indriyāni. Katamāni pañca? Saddhindriyaṃ … pe … paññindriyaṃ—imāni kho, bhikkhave, pañcindriyāni. Imesaṃ kho, bhikkhave, pañcannaṃ indriyānaṃ samattā paripūrattā arahaṃ hoti, tato mudutarehi antarā­pari­nib­bāyī hoti, tato mudutarehi sasaṅ­khā­ra­pari­nib­bāyī hoti, tato mudutarehi uddhaṃsoto hoti akaniṭṭhagāmī, tato mudutarehi sakadāgāmī hoti, tato mudutarehi sotāpanno hoti, tato mudutarehi dhammānusārī hoti, tato mudutarehi saddhānusārī hoti. Iti kho, bhikkhave, paripūraṃ paripūrakārī ārādheti, padesaṃ padesakārī ārādheti. ‘Avañjhāni tvevāhaṃ, bhikkhave, pañcindriyānī’ti vadāmī”ti. In this Sutta: - What are asaṅ­khā­ra­pari­nib­bāyī and sasaṅ­khā­ra­pari­nib­bāyī ? - What is the meaning of vadāmī? - Do dhammānusārī and saddhānusārī mean Cula Sotapanna? - Is the maximum of seven lives applicable to Cula Sotapanna? Thanks.