I made something very similar. https://cjboco.github.io/wordfinder/ https://cjboco.github.io/wordfinder/ - except mine you use normal keyboard to create your wo

I made something very similar. https://cjboco.github.io/wordfinder/ https://cjboco.github.io/wordfinder/ - except mine you use normal keyboard to create your word and the on screen keyboard to exclude the characters. Think I prefer your way.