Are these two graphs isomorphic? 
Definitions:
Uncollectible
Refers to debts or receivables that are deemed impossible to collect on or recover due to the debtor's inability to pay.
International Trade
The exchange of goods and services across international borders or territories.
Draft
A draft is a preliminary version of a document, plan, or design that is subject to revisions and improvements.
Buyer's Bank
The financial institution that represents a buyer in transactions, ensuring payment to the seller under agreed conditions.
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