Problem $1$: Each pair of partner nodes can execute a specific kind of smart contract. On this blockchain, partners can

execute supply, transfer, or sales contracts. The gear next to arrow a indicates that supplier Right Wrists and Build$-4-$

You Corporation can transact with each other using a supply smart contract. Fill in the small boxes on the diagram to

indicate what kind of smart contract each pair of partners can execute $($supply$,$ transfer, or sale$).$