Changes

<p><math>\begin{array}{l} 1\!:\!1 ~~ 2\!:\!2 \\ 18 \end{array}</math></p>

<p><math>\begin{array}{l} 1\!:\!1 ~~ 2\!:\!2 \\ 18 \end{array}</math></p>

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<p><math>\cdots</math></p><br>

<p>[[Image:Riff 19 Big.jpg|90px]]</p><br>

<p><math>\text{p}_{\text{p}^{\text{p}_{\text{p}}}}\!</math></p><br>

<p><math>\text{p}_{\text{p}^{\text{p}_{\text{p}}}}\!</math></p><br>

<p><math>\begin{array}{l} 8\!:\!1 \\ 19 \end{array}</math></p>

<p><math>\begin{array}{l} 8\!:\!1 \\ 19 \end{array}</math></p>

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<p><math>\cdots</math></p><br>

<p>[[Image:Riff 20 Big.jpg|90px]]</p><br>

<p><math>\text{p}^\text{p} \text{p}_{\text{p}_{\text{p}}}\!</math></p><br>

<p><math>\text{p}^\text{p} \text{p}_{\text{p}_{\text{p}}}\!</math></p><br>

<p><math>\begin{array}{l} 1\!:\!2 ~~ 3\!:\!1 \\ 20 \end{array}</math></p>

<p><math>\begin{array}{l} 1\!:\!2 ~~ 3\!:\!1 \\ 20 \end{array}</math></p>