Before a Present-character (śit) the following substitutions take place - 1. pib for pā 2. jighra for ghrā 3. dham for dhmā 4. tiṣṭh for sthā 5. man for mnā 6. yach for dā (dāṇ) 7. paśya for dṛś 8. ṛcch for ṛ 9. dhau for sṛ 10. śīy for śad and 11. sīd for sad,
As पिबति, जिघ्रति, धमति, तिष्ठति, मनति, यच्छति, पश्यति, ऋच्छति, धावति, शीयते and सीदति ॥ पिब् + शप् + तिप् required Guna of the इ of पि by 7.3.86, it however does not take place on the maxim: अङ्गवृत्ते पुनर्वृत्तावविधिः \when an operation which is taught in the angadhikara, has taken place, and another operation of the angadhikara is subsequently applicable, this latter operation is not allowed to take place\. Or the substitute पिब is one which ends with अ, and is acutely accented on the first. It must be acutely accented on the first; otherwise by 6.1.162, the acute will be on the last पिब꣡ ॥ Then when there is ekadesa with शप्, the acute will be on the middle in पिब꣡ति, which is not desired. धौ is substituted for सृ when the sense is 'to run, move quickly'; in any other sense, we have प्रसरति, अनुसरति ॥,