HTR-ctc with fastai workflow

I would like to use fastai workflow for a HTR-ctc text reader pipeline in this project. Being new to fastai and Deep Learning I would like to ask if somebody knows how to go about this. The inputs are images and therefore an ImageList could be used to hold them. However, the outputs should be words. How to get a word-type LabelList?

Btw, if anyone is interested in helping out or join this project - feel free to send me a request!