Bipentatonic scale

A dipentatonic scale is a 10-note scale where every other note gives an MOS pentatonic scales generated by a diatonic-sized fifth (between the 7edo fifth and the 5edo fifth) of a fixed size. Most useful are di-meantone pentatonic and di-superpyth pentatonic. Equivalently, they are scales that have a maximaum of two sizes for intervals that are an even number of steps. Some dipentatonic scales are MOSes, such as the Erlich decatonic in 22edo. Dipentatonic scales are useful because modulating by fifths is easy in them.

Dipentatonic scales can be classified by their fifth size and the separation between the two chains of fifths. This article surveys dipentatonic scales you can get in various edos with relatively good fifths. Small steps about 1\22 or smaller will be avoided.

27edo

0-3-5-9-11-14-16-19-22-25-27: separation by 14\27 (~13/9)

0-3-5-9-11-14-16-20-22-25-27: separation by 25\27 (~15/8)

0-3-5-8-11-14-16-19-22-24-27: separation by 19\27 (~13/8) (neutral thirds MOS)

0-3-5-8-11-14-16-19-22-25-27: separation by 3\27 (~13/12)