2 × 40FT bottom + 1 × 20FT top
2 × 40FT + 1 × 20FT (L-shape utility wing)
3 × 40FT (one container rotated)
3 × 40FT (side-by-side)
2 × 40FT (central gap / courtyard)
2 × 40FT bottom + 1 × 40FT top