The word Bildsten is misspelled against Bildstein, a noun meaning "Same as Agalmatolite."
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Word contains consecutive vowels 'EI' in between alphabets bildst & n is misspelled as 'E' as letter 'I' is phonetically ignore
Wrong Spelling:  bildst-e-n 
Correct Spelling:  bildst-ei-n 
Find more wrongly spelled words of Bildstein to spell it well.