Expect an unknown word for a "Spell" command for a kid

Hi there !

I’m trying to build a skill for my kid that would spell a world. The idea is as follow
“Spell berry” where berry is a word that I haven’t trained, using nodered I will then use TTS to say B E R R Y. I can’t manage to grab this unknown world in an intent, I’ve read the docs regarding opentranscription but feel a bit lost and couldn’t figure out how to write my sentence.ini.

Is it even possible ?

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