However, there is some common ground between certain episodes of the two shows.

Oddly, we do not remember much about this certain episode.

No book can include everything, but we need to know more about why the authors picked certain episodes and not others.

However, it becomes clear from certain episodes that Ross has issues of his own.

Due to the lack of published reports, only ratings for certain episodes are available.

In certain episodes she expressed concern about her sister and gender issues.

Certain episodes have frequently been singled out by critics as the show's best.

In certain episodes he can show morals and respect for other characters.

Certain episodes are known to have been newly written and incorporated in the nineteenth century.

She searches his past and eventually finds a certain episode with which to confront him.