No Root Okurigana?!
As noted in the -ru (一段) Verb Conundrum (above) the penultimate イ and エ syllables of 一段動詞 (-ru verbs) are treated as part of the inflectional tail, thus included in the okurigana. This cautionary note regards two-syllable 一段動詞 (-ru verbs) or the irregular verb 来る. In these cases, the first syllable is left inside the kanji.