Components in this compound:

se

2nd conversion; switch 1st/2nd places.

platu

x₁ (agent) plans/designs/plots plan/arrangement/plot/[schematic] x₂ for state/process x₃.

bangu

x₁ is a/the language/dialect used by x₂ to express/communicate x₃ (si'o/du'u, not quote).