Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
συνταγών arranged LXX.Ezra.10.14
συνταγή arranged order LXX.Judg.20.38

Liddell-Scott-Jones

συνταγή (suntagē) an arranged order G:N-F

συνταγή, ,

order, command, κατὰ συνταγήν [Refs]; of an oracle, κατὰ σ. σωθεὶς χαριστήριον [Refs]; preconcerted signal in war, variant in [LXX]; ἀπὸ συνταγῶν at appointed times,[LXX]; physician's prescription, [Refs 2nd c.AD+]

__II plural, covenant, [Refs 4th c.AD+]

LSJ Scripture Refs: LXX.Judg.20.38