How do I make a combo? (Kingdom Come: Deliverance)

I honestly don't understand how to do complex combo of 4 hits, I fought Bernard for an hour in training mode for an hour for the sake of Zornort, and he is of three hits. I know about the trick, if you hit in one direction, then npc will definitely block perfectly, I tried to knock out this combo every 3-4 hits, because in a little over an hour I was able to perform it once. Please tell me how to make sure that the enemy does not parry every 2-3 blow? Without a combo, the fight comes down to plugging in the face after a clinch or a banal parry (I was the last one to clear out the whole Pribyslavitsa in solo)