Put a 6x1 hor to the left.
Repeat symm at the front.
Put a 2x1 slide ver to the left and to the back, slide to the
back.
Repeat symm at the back.
Bag 3.
Put a 2x1 ver to the left.
Repeat symm at the front.
Put a F 6x2 ver to the left of the two PPs.
Put a F 4x2 hor to the left, at the back edge.
Repeat symm at the front.
Put a F 2x2 disk to the back of the two left columns of the PP.
Put a grate hor at the left back corner.
Repeat symm at the front.
Put a F 4x2 from a sep bag ver between the two PPs.
Bag 4.
Skip one column from the left and put a F 2x2 in the middle.
Put a F 2x1 with one button ver to the back of the right column
of the PP.
Repeat symm at the front.
Put a grate hor to right, at the front edge.
Repeat symm at the back.
Put a F three-button corner piece to the front, letter F.
Put a F three-button corner piece to the front, letter H.
Put a F 2x1 with one button ver to the right and to the front.
Repeat symm at the back.
Stack two F 2x1 and put hor to the right, at the back edge.
Repeat symm at the front.
Bag 5.