en: {
      year: function(c) { return "year" + ((c !== 1) ? "s" : ""); },
      month: function(c) { return "month" + ((c !== 1) ? "s" : ""); },
      week: function(c) { return "week" + ((c !== 1) ? "s" : ""); },
      day: function(c) { return "day" + ((c !== 1) ? "s" : ""); },