Labial, Velar, and Dental Stops

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Cards

Labial, unvoiced π  
Dental, unvoiced τ  
Velar, voiced γ  
Velar, aspirate χ  
Dental, aspirate θ  
Labial, voiced β  
Dental, voiced δ  
Labial, aspirate φ  
Velar, unvoiced κ  
Labial (π, β, φ) + σ = ψ  
Velar (κ, γ, χ)+ σ = ξ  
Dental (τ, δ, θ) + σ = σ  

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