<div class="block1">
<div class="block1__item1"></div>
<div class="block1__item1"></div>
<div class="block1__item1"></div>
<div class="block1__item1 block1__item1_modificator1">
<div class="block3 block3_modificator1">
<div class="block3_item4"></div>
<div class="block3_item5"></div>
<div class="block3_item4">
<div class="block4">
<div class="block4_item6"></div>
</div>
</div>
</div>
</div>
<div calss="block2">
<div class="block2__item2">
<div class="block2__item3"></div>
<div class="block2__item3"></div>
</div>
<div class="block2__item2"></div>
</div>
</div>