Easy:
  Level 2:   Cherries - Mouse - Elefant - Note - Goose
  Level 3:   Elefant - Goose - Note - Mouse - Cherries
  Level 4:   Note - Elefant - Mouse - Cherries - Goose

Difficult:
  Level 4:   Mouse - Goose - Note - Elefant - Cherries
  Level 8:   Goose - Cherries - Mouse - Elefant - Note

By Kevin J.