England build healthy lead in the third Test despite Alastair Cook's bizarre run out
Bell managed just a sedate five before edging Ishant Sharma to Dhoni not long after the tea interval.
Pietersen had made his way to a confident-looking half-century before he was trapped leg before by a straight one from Ravichandran Ashwin for 54.
And then Patel's 33-run cameo came to an end when he cut a wide one from Ojha and Virender Sehwag took a smart catch at the second attempt at slip.
Prior, though, added runs at a regular rate as he and Swann ensured England continued to extend their advantage.
Prior remained unbeaten on 40 - his knock coming off 46 balls and including one booming six - while Swann was 21 not out.
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