а
7 2 = = = = _ _
7 2 = = = = _ _ + +
7 2 = = = = _ _ + + _ _
7 2 = = = = _ _ + + _ _ _ _
7 2 = = = = _ _ + + _ _ + + _ _
8 4 < > < > _ _
8 4 < > < > _ _ + +
8 4 < > < > _ _ + + _ _
8 4 < > < > _ _ + + _ _ _ _
8 4 < > < > _ _ + + _ _ _ _ + +