This scale is by alternation of intervals of 5 semitones (4ths) and alternating again intervals of 3 and 4 semitones (major-minor 4rds)
E.g.
5-4-5-3-5-4-5-3-5-4-5
C1-F1-A1-D2-F2-Bb2-D3-G3-Bb3-Eb4-G4-C5
In total reduced to one octave it is C2-D2-Eb2-F2-G2-A2-Bb2-C3 which is the Bb major diatonic scale
There is of course a corresponding tuning of string instruments in this patter.
Also the uniform tuning of string instruments by intervals of 4 ((5 semitones) like BASS and Puerto-rican Cuatro have symmetric representation of this scale which is sequence triad chords in invented forms. Such tunings allow for 3 inverted types of major-minor chords.
The 4 higher strings of a guitar have such pattern. The same with the 4-courses of a Greek Bouzouki.
