When Ziz[0] meets Ziz[1],that is, Σ meets Δ

When Ziz[0] meets Ziz[1],that is, Σ meets Δ, it usually means three things:
Σ Ziz Vivoran harmonize Δ Ziz Vivorin, abbreviation is Σ HMY Δ
Σ Ziz Vivoran overwhelm Δ Ziz Vivorin, abbreviation is Σ OVL Δ
Σ Ziz Vivoran undermine Δ Ziz Vivorin, abbreviation is Σ UDM Δ