61.  There, he had to knock on doors on five different floors before a young girl opened her door and allowed him in.

62.  Then government-backed militants started knocking on doors in his village.

63.  They knock on doors saying they have to come inside to check water pipes, roof conditions or cable lines.

64.  They knocked on doors until leads resulted in three arrests on Christmas day.

65.  They knocked on doors until leads resulted in three arrests several days later.

66.  They knock on doors.

67.  They got their doors knocked on and were taken away.

68.  They knock on doors at all hours of the day and evening and grab passers-by anywhere they can.

69.  This time, after knocking on doors in vain for a month, he has even begun visiting factories.

70.  Those local judges and county commissioners knocking on doors this weekend?