Judges 3—16: The 7 Repetitive Events, “they did evil in the sight of the Lord”:
2:11 (summary of the book);  3:7;  3:12;  4:1;  6:1;  [8:33-34]; 10:6;  13:1.
All in about a 325-year span.
 

• 13 Total Judges (7 Major [each bearing “evil” tagline] and 6 Minor): 
  • Othniel (3:7-11)
  • Ehud (3:12-30)
  • Shamgar (3:31)
  • Deborah and Barak (4:1—5)
  • Gideon (6—8)
  • Abimelech (9)
  • Tola (10:1-2)
  • Jair (10:3-5) [note, the events of Ruth probably occurred here]
  • Jephthah (10:6—12:7)
  • Izban (12:8-10)
  • Elon (12:11-12)
  • Abdon (12:13-15
  • Samson (13—16)