Irregular option not working for the string 'information'

Still facing the same issue as in #95

I am trying with an string 'information' and trying to pluralize the same. But the string doesn't get pluralized. Here is the [ember-twiddle](https://ember-twiddle.com/eb53471fb13143b9e49a4f9b0e44d80e?fileTreeShown=false&numColumns=2&openFiles=routes.application.js%2Cadapters.application.js) for reproducing the error.