H-tree construction

H-tree construction. The root drives four tap points, one per quadrant of a 4x4 grid of sinks, and each tap drives its quadrant. Balance the tree:

• Skew under target - drag each tap toward the centre of its quadrant to shrink that quadrant's spread, and keep all four root-to-tap arms the same length. That symmetry is what makes the H-tree the classic near-zero-skew structure.
• Latency in budget - keep the longest path within budget.

Make it symmetric, then Submit design.