$\backslash$table$[[,\backslash$table$[[($ Insert into a BST: $5,9,20,6,10,14,23,45,12,88,90],[-$ Tree walks: Inorder, Preorder, Postorder$],[-$ Delete: $20,23,6,88]]],[,\backslash$table$[[-$ Insert into a BST: $6,7,30,43,28,25,10,2,1],[-$ Tree walks: Inorder, Preorder, Postorder$],[$Delete: $43,28,7]]]]$