[word=and] [tag=NNS] [lemma=that] □ □
[word=and] [tag=NNS] [lemma=that] [□] □
[word=and] [tag=NNS] [lemma=that] □ □ □
They faced the steady onslaught of new concepts , strategies , and skills that teachers must stay abreast of , while providing continuity in their classrooms .