1.2 [1] 1.4 [2] [3] 3.4 с/р [4] [5] [6]
https://docs.google.com/presentation/d/1Vf82y6w43C70Gp4X02RBI0ohXofp029ZLtYRHinYxA0/edit?usp=sharing 3.5 [7]
