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{{#if:{{{year|}}}|{{#if:{{{offset|}}}|{{#expr:{{#expr:{{{year}}}+{{{offset}}}}}-{{CURRENTYEAR}}}}|{{error|Error: the {{code|offset}} parameter cannot be empty for the {{tl2|years left}} template. Please specify an offset.}}}}|{{error|Error: the {{code|year}} parameter cannot be empty for the {{tl2|years left}} template. Please specify a year.}}}}