Pluralize a string

Plural.kt

fun String.plural(size: Int): String {
    val consonants = "bcdfghjklmnpqrstvwxz"

    if (size > 1 && this.length > 2) {
        if ((this.endsWith("o", true) || this.endsWith("s", true)) &&
                consonants.contains(this[this.length - 2], true)) {
            return this + "es"
        }

        if (this.endsWith("y", true) &&
                consonants.contains(this[this.length - 2], true)) {
            return this + "ies"
        }
    }

    return this + "s"
}