Invention 1
Variation 1
Variation 2
Invention 2
Invention 3
Variation 3
Invention 4
Variation 4
Invention 5
Invention 6
Variation 5
Invention 7
Invention 8
Variation 6
Invention 9
Variation 7
Invention 10
Invention 11
Invention 12
Variation 8
Variation 9
Variation 10
Invention 13
Invention 14
Variation 11
Invention 15
