2-3-4 Tree. The bottom is the solution. Can someone please show me the steps to get there.

6 32 S 25 8122 l0 a. Insert 72 b. Insert 106 C. Insert 74 d. Delete 25 e. Insert 78 f. Insert 79 g. Delete 4 h. Delete 16 59 8 32 08 7 194