with open('unknown.txt','rb') as f:
    content = f.read()
x = content.decode('utf-16-be')
print(x)
with open('known.txt','w') as f:
    f.write(x)
with open('known.txt') as f:
    lines = [line.replace('\n','\r\n') for line in f]
with open('known.txt','w') as f:
    f.writelines(lines)