From card no. 3ZCHSJWM:

A subject? Like a subject tiu === you study at school? Like science or geography or maths? Did you go to school? no, like the subject that controls othet r words in a sentence like verbs, I guess!
A subject? Like a subject tiu === you study at school? Like science or geography or maths? Did you go to school? no, like the subject that controls othet r words in a sentence like verbs, I guess! No, autodidact