bg: https://huggingface.co/anuragshas/wav2vec2-large-xls-r-300m-bg
dataset: Common Voice Bulgarian 8
Test WER: 21.195

cs: https://huggingface.co/comodoro/wav2vec2-xls-r-300m-cs-250
dataset: Common Voice Czech 8
Test WER: 0.1475

de:
dataset: 