first linesecond linethird line \mathrm{first\ line} \\ \mathrm{second\ line} \\ \mathrm{third\ line} first linesecond linethird line \mathscr{first\ line} \\ \mathscr{second\ line} \\ \mathscr{third\ line} 𝔣𝔦𝔯𝔰𝔱 𝔩𝔦𝔫𝔢𝔰𝔢𝔠𝔬𝔫𝔡 𝔩𝔦𝔫𝔢𝔱𝔥𝔦𝔯𝔡 𝔩𝔦𝔫𝔢 \mathfrak{first\ line} \\ \mathfrak{second\ line} \\ \mathfrak{third\ line} 𝒻𝒾𝓇𝓈𝓉 𝓁𝒾𝓃ℯ𝓈ℯ𝒸ℴ𝓃𝒹 𝓁𝒾𝓃ℯ𝓉𝒽𝒾𝓇𝒹 𝓁𝒾𝓃ℯ \mathcal{first\ line} \\ \mathcal{second\ line} \\ \mathcal{third\ line}