Sampling; Language corpus; Sprachkorpus; Datensammlung; Data collection; Textkorpus (method.) ; Text corpus (method.) ; Corpus linguistics ; Written language ; Frequency (morph.) ; Areallinguistik; Geolinguistik; Geolinguistics; Linguistic geography ; Mundartforschung; Dialectology ; Language norm ; Auxiliary ; Verba copulativa; Copulative verbs; Copula ; Modal verb ; Synalepha; Synaloiphe; Fusion (phonol.) ; Coalescence (phonol.) ; Contraction ; Readers' letters; Zuschauerpost; Letters to the editor ; GA; Standard American English; SAE