What is Real Madrid's three consecutive championships?

Real Madrid's Champions League three consecutive championships are from 15 to 16, 16 to 17, 18.

15 to 16 season finals, Real Madrid 1, Atletico Madrid penalty, Real Madrid 5-3.

16 to 17 season finals, Real Madrid beat Juventus 4-/kloc-0.

17 to 18 season finals, Real Madrid beat Liverpool 3-/kloc-0.