Application of these methods in stores in San Deigo and Cinncinati have resulted in a 30 drop in robberies an a 50 percent decling in violence there, according at the developers if the security system, Hanover brothrs, Inc.

application of these methods in stores in San Deigo nd Cinncinati have resulted in a 30 drop in robberies an a 50 percent decling in violence there, according at the developers if the security system, Hanover brothrs, Inc.
Okay. I did. There are at least eleven mistakes in that sentence.

Ditto that... first round I counted nine... second time, saw eleven potential mistakes.