@Thijs, voor als je tijd over hebt hier nog wat mogelijkheden om de toonladders gebroken te spelen
First Pattern: 1357 2468 3579 etc.
Second Pattern: 7531 8642 9753 etc
Third Pattern: 1357 8642 3579 etc.
Fourth Pattern: 7531 2468 9753 etc.
Fifth Pattern: 13576543 24687654 35798765 etc.
Sixth Pattern: 13 24 35 46 57 etc
Seventh Pattern: 14 25 36 47 58 etc.
Eighth Pattern: 135 246 357 468 etc.
Ninth Pattern: 531 642 753 864 etc.
Tenth Pattern: 7135 #1246 #2357 3468 etc. (ascending triad with a leading tone to the root)
Eleventh Pattern: 7164 #6753 #5642 #4531 (descending triads with a leading tone to the 5th)
Twelfth Pattern: 3135 4246 5357 etc.
Thirteenth Pattern: 3531 4642 5753 etc.