2 2

     3 2

     3 tree

     4 tree

     4 41 224 22 1 1 0 0 105 203

     5 41 224 22 1 1 0 0 105 203

     5 gr1

     6 gr1

     6 47 123 27 4 1 0 0 121 105

     7 47 123 27 4 1 0 0 121 105