In the German dictionary I refer to often, there is the conjugation of verbs only for (du) and (er) as below (for word Können).
I know the conjugation for ich is kann. Is it because I can deduce the 1st person conjugation from kannst or kann? If so, what is the exact rule? just remove 'st' from 'kannst'?
In the example below, I cannot deduce 'Ich lese' from 'Du liest' or 'Er liest'.