23 bookB
     22 label
     21 style
     20 filled
     20 fillcolor
     19 bookA
     16 bookC
     13 orange
     10 bookE
     10 bookD
      6 yellow
      5 pmgraphviz
      5 digraph
      3 read
      3 lead
      3 bookF
      2 recommanded
      2 also
      2 John
      1 steps
      1 lightyellow
      1 from
      1 dotted
      1 center
      1 animation
      1 Example
      1 AnimationExample