descentants from picture - PEXTopPart, depth = 0
numPaths= 3
num elements= 3
  [3 1]
  [2 2]
  [1 0]
num elements= 3
  [3 1]
  [2 4]
  [1 0]
num elements= 2
  [3 3]
  [1 0]
descentants from picture - PEXTopPart, depth = 1
numPaths= 2
num elements= 1
  [3 1]
num elements= 1
  [3 3]
descentants from picture - PEXBottomPart, depth = 1
numPaths= 1
num elements= 1
  [1 0]
ancestors of nothing - PEXTopPart, depth = 0
numPaths= 1
num elements= 1
  [0 0]
ancestors of line - PEXTopPart, depth = 0
numPaths= 4
num elements= 2
  [4 1]
  [1 0]
num elements= 3
  [3 1]
  [2 2]
  [1 0]
num elements= 3
  [3 1]
  [2 4]
  [1 0]
num elements= 2
  [3 3]
  [1 0]
ancestors of line - PEXTopPart, depth = 1
numPaths= 3
num elements= 1
  [4 1]
num elements= 1
  [3 1]
num elements= 1
  [3 3]
ancestors of line - PEXBottomPart, depth = 2
numPaths= 4
num elements= 2
  [4 1]
  [1 0]
num elements= 2
  [2 2]
  [1 0]
num elements= 2
  [2 4]
  [1 0]
num elements= 2
  [3 3]
  [1 0]
all structures reference of picture
numStruct= 3
  3
  2
  1
orphan structures reference of picture
numStruct= 2
  3
  2
