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Commonly used Greek alphabet: θ, π, μ, σ, α, β, Δ, Σ, Φ, Ω, Γ, λ, ψ, ω
Square root: √
Superscripts: ⁰¹²³⁴⁵⁶⁷⁸⁹⁺
Subscrips: ₀₁₂₃₄
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<!– can't set unicode directly? θ α α \u3b8 "\u{3b8}"; instead, I copied letters from https://unicode-table.com/en/ –>
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