enable extended context for sub-corpora
enable extended context for sub-corpora

CentreForResearchInAppliedLinguistics/clic,CentreForResearchInAppliedLinguistics/clic,CentreForCorpusResearch/clic,CentreForResearchInAppliedLinguistics/clic,CentreForCorpusResearch/clic,CentreForCorpusResearch/clic