Sentence:  Before adding the inner parts, check that there are no <WSD>consecutives</WSD> between S and B – don't forget that these can occur between the last printed notes of the phrase and your added parts, as well as within your own working. Here the risk of <WSD>consecutives</WSD> has been minimised by using mainly contrary motion in the bass. 
Meaning of the word marked with <WSD> tags:  A sequence of notes or chords that results from repeated shifts in pitch of the same interval.