 schmelze > gschmùlze) 
2.3.5 Infinitive ä/i - Present i - Participle ä 
2.3.5.1 ä - i - ä (e.g.äse > gäse) 
2.3.5.2 i - i - ä (e.g.bide > bäde) 
2.3.6 Infinitive Vowel is the same as the Participle 
2.3.5.1 (e.g.