9, 10, and 11 note strictly proper 19-et scales

Two in 9, one of them Negri[9]. Only one in 10, Negri[10]. Number in
11? None! Hence, for these three, only one new scale.

! prop19_9a.scl
Negri[9] = 09-19.scl
9
!
126.315789
252.631579
378.947368
505.263158
694.736842
821.052632
947.368421
1073.684211
1200.000000

! prop19_9b.scl
Alternative proper 9-note 19-et scale
9
!
126.315789
315.789474
378.947368
568.421053
694.736842
821.052632
947.368421
1073.684211
1200.000000

! prop19_10.scl
Negri[10] = 10-19.scl, Negri's 10+9 scale
10
!
126.315789
252.631579
378.947368
505.263158
631.578947
694.736842
821.052632
947.368421
1073.684211
1200.000000