'config.form_settings.reading_speed.100_word' => '0.5',
'config.form_settings.reading_speed.200_word' => '1',
'config.form_settings.reading_speed.300_word' => '1.5',
'config.form_settings.reading_speed.400_word' => '2',
'config.form_settings.reading_speed.100_word' => '0.5',
'config.form_settings.reading_speed.200_word' => '1',
'config.form_settings.reading_speed.300_word' => '1.5',
'config.form_settings.reading_speed.400_word' => '2',