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8 bytes removed ,  23:53, 7 April 2010
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{{#len:{{#if:{{#pos:{{{keys}}}|{{{key}}}}}|{{#sub:#{{{keys}}}|0|{{#pos:#{{{keys}}}|{{{key}}}}}}}|notfound}}}}
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{{#sub:#{{{keys}}}|0|{{#expr:{{#if:{{#pos:{{{keys}}}|{{{key}}}}}|{{#pos:{{{keys}}}|{{{key}}}}}|-1}} + 1}} }}·
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