Отрыв от земли (вступление)

Вступление:
1-------------3-1-0-------------3-1-0--------------1-0-1-------------1-0-1-
2-------1-----------------1------------------3-----------------3-----------
3-0-h-2-----2-------0-h-2-----2--------0-h-2-----2-------0-h-2-----2-------
4--------------------------------------------------------------------------
5--------------------------------------------------------------------------
6--------------------------------------------------------------------------