3MNDLDPG2JR3BC6MM3ZDMASLPSV4IISD3M2UWJX5RYBYS2GZMELAC
TBPJ5WSRM5IKQH7FTAVYTWWUBWW7G2CLT5M6FN7CMPLD6Y77YIWQC
node.h = box_height(node)