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#data structure
#node
#edge
#graph theory
#computer science
#hierarchy
#abstract tree
#binary tree
#parent-child nodes
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#tree shape
#symbolic tree
#abstract tree
#tree lights
#tree ornaments
#bauble
#triangle tree
#decorated shape
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#green tree
#tree colors
#abstract tree
#tree ornament
#tree star
#topper
#festive colors
#holiday colors
#data structure #node #edge #graph theory #computer science #hierarchy #abstract tree #binary tree #parent-child nodes