Sampling; Language corpus; Sprachkorpus; Datensammlung; Data collection; Textkorpus (method.) ; Text corpus (method.) ; Corpus linguistics ; ARCHER ; BNC ; CEEC ; Speech-act theory ; Sprachwandel (pragm.) ; Language change (pragm.) ; Sprachgebrauchswandel; Deictification; Subjektivierung; Subjectification; Pragmatic change ; Literary language ; Verba illocutiva; Performative verbs ; English ; Anglo-Saxon; Old English