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had been following is the most popular phrase on the web.

has following 1469,000 results on the web	had been following 1497,000 results on the web More popular!
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The pharmacokinetic profile has been characterized following oral administration. The DEA has been following the Harrenvolk Brotherhood. In the meantime, the confusion has worsened following further refusals by airlines to apply compensation clauses. Reese has been following me all along. Amendment 25 has been changed following discussions with the Commission. I swear someone has been following me around. IA has made the following report. I swear MasterCard has drones following my every more.	known arms smuggler. Whoever's doing this had been following McLane for years. Secret service... had been following this case and was nearby but regrets having been unable to prevent the murder of Otto Krampe... the well I could've sworn that guy had been following me. I mean, according to his roommate, the car had been following them earlier in the evening, so he was clearly targeted. I... I thought someone had been following me. She had been following my orders since her release from Radley. (Children speaking indistinctly) The most disturbing event, and the subject of our resolution, was the Maguindanao massacre, the assassination of 46 people who had been following the electoral convoy of the opposition candidate Mr Mangudadatu.

has following

1469,000 results on the web

had been following

1497,000 results on the web

More popular!

The pharmacokinetic profile has been characterized following oral administration.
The DEA has been following the Harrenvolk Brotherhood.
In the meantime, the confusion has worsened following further refusals by airlines to apply compensation clauses.
Reese has been following me all along.
Amendment 25 has been changed following discussions with the Commission.
I swear someone has been following me around.
IA has made the following report.
I swear MasterCard has drones following my every more.

known arms smuggler.
Whoever's doing this had been following McLane for years.
Secret service... had been following this case and was nearby but regrets having been unable to prevent the murder of Otto Krampe... the well
I could've sworn that guy had been following me.
I mean, according to his roommate, the car had been following them earlier in the evening, so he was clearly targeted.
I... I thought someone had been following me.
She had been following my orders since her release from Radley. (Children speaking indistinctly)
The most disturbing event, and the subject of our resolution, was the Maguindanao massacre, the assassination of 46 people who had been following the electoral convoy of the opposition candidate Mr Mangudadatu.