Humanizer Core - Singular of "arrives" is "arrife"

[jaybuckman]

"arrives".Singularize() produces "arrife" instead of "arrive".

I was able to use Vocabularies.Default.AddSingular() to work around this issue.

[jaybuckman]

Also, "drives".Singularize() produces "drife" instead of "drive".
And "curves".Singularize() produces "curf" instead of "curve".
And "behaves".Singularize() produces "behafe" instead of "behave".