Hello I have a table in written in excel and i want to make and ADT of
it

I want to PLOT a tree from a table

the table sturct is this

level . key .

the arrangement of the table is like this

level key
0 10
1 12
2 5
3 3
2 8
1 34
2 3
2 22
1 45
2 56
3
2
3
the order of the tree is center left right
i want to get plot of this tree I dont care if some 1 have a solution
not in excel