BOSTON – Peabody Police Lieutenant Edward Bettencourt sat in Suffolk Superior Court Monday for the second day of witness testimony regarding his indictment on 21 counts of unauthorized computer access.Taking the stand was the only alleged eyewitness to the crime, Sgt. Michael Breen, who offered false testimony during the indictment hearing before a grand jury nearly a year and a half ago. In his original testimony, Breen reported viewing for the first time his score and the score of several other Peabody officers who recently had completed a Civil Service Exam with Bettencourt while inside the watch commander’s office on Christmas morning in 2004. He testified to viewing such scores and rankings on a computer screen, most likely the Massachusetts Human Resources Division’s Civil Service Exam Applicant Web site, while seated next to Bettencourt.Since making that statement, however, Breen has changed his recollection of events, clarifying that he looked up his personal score on his home computer prior to speaking with Bettencourt at the station. He told the Attorney General’s office that, rather, he saw the results on a handwritten piece of paper, not on the computer screen.”I told him, ‘I did pretty good. I scored an 81,’ and he told me, ‘Do you want to know where you finished?’ ” Breen told the court Monday while under questioning by Prosecutor Ina Howard-Hogan. Breen then said Bettencourt pulled up the eligible list on the computer and told him where he placed – in a tie for third with then Lt. Sheila McDaid – and wrote the grades down on a piece of paper.Breen said that he and Bettencourt discussed the scores and their chances for a promotion and retirement, but that the conversation didn’t go any further than that.Defense Attorney Douglas Louison paced up and down the courtroom as he keyed in on the many discrepancies between Breen’s present testimony and his original declarations. In Douglas’ opening statement Friday, he said that it was Breen’s false testimony that led to his client’s indictment. When he asked Breen about his sudden change in memory, Breen offered no reason.Another important figure in the case was sworn in Monday. Lt. Marty Cohan told of his encounter with Lt. Breen in regards to a discussion over the test results.”Breen asked how I did,” Cohan said to the Court. “He said I didn’t need to tell him, everyone knew, because Civil Service was a joke.”The conversation provoked Cohan to question how and why everyone would know his score. He testified that he thought of two possibilities, that someone bypassed the password, or someone created duplicate accounts. He called a representative from Civil Service and expressed his concerns. After looking into the problem, they discovered that the IP addresses attached to the accounts came from the Peabody Police Department. With that confirmation, Cohan notified Peabody Police Chief Robert Champagne.”I felt it was the time to tell him,” said Cohan, who later took it upon himself to confiscate and secure all available evidence, such as video surveillance tapes and computer hard drives, for investigation.There were many questions to many police employees about who was working when, who had access to computers and specific programs, as well as who saw Lt. Bettencourt in the watch commander’s office, where the false accounts were created using confidential employee information. With many fuzzy memories, and hard-to-recall dates, it’s not clear how far either counsel got with the 13 witnesses who testified yesterday.Bettencourt, 55, and a long-time resident of Peabody, stands accused of accessing confidential information of 20 fellow police officers and one Salem officer while on duty at the station during the wee hours of Christmas morning in 2004. It is alleged that Bettencourt used that information to look up Civil Service Exam Scores, which are used for promotional purposes within the station.If convicted, Bettencourt, father of City Councilor-at-Large Ted Bettencourt,