21.   We lived in an apartment building for several years before buying a house.

22.   After college, he freeloaded off his parents for several years before finally moving out.

23.   The dispute simmered for years before any progress was made.

24.   We lived in an apartment for several years before buying a house.

25.   Living with his mother Kiefer stayed in Los Angeles for a few years before moving back to Bridgewater Canada.

26.   The space station had plummeted from the sky thousands of years before, scattering debris over many kilometres.

27.   Height velocity in the first year after operation increased dramatically compared with year before operation among patients with growth potential.

28.   He did well for a year before developing intermittent rectal incontinence.

29.   It was about two thousand years ago and it was how many years before Christ.

30.   Over ten percent of the turnov, turnover of the Council, and which was in fact doubled from the size of the deficit from the year before that.