source: [lemma=at]? [lemma=□] □ □ □
destination: [lemma=at]? [lemma=the] □ □ □
spec: The university regulations say that students who fail an examination - after it is marked by their lecturers and external examiners - repeat the unit for a whole semester.But this was not the case with the 30 students . NGS surveyed these marks last year using more conventional spirit leveling techniques .