Can someone help explain the posting based on the question below?

Post transactions to the following accounts: Cash, Accounts Receivable, and Allowance for Uncollectible Accounts.

The following events occur for The Underwood Corporation during 2021 and 2022, its first two years of operations. June 12, 2021 Provide services to customers on account for $29,000. September 17, 2021 Receive $15,000 from customers on account. December 31, 2021 Estimate that 40% of accounts receivable at the end of the year will not be received. March 4, 2022 Provide services to customers on account for $44,000. May 20, 2022 Receive $10,000 from customers for services provided in 2021. July 2, 2022 Write off the remaining amounts owed from services provided in 2021. October 19, 2022 Receive $35,000 from customers for services provided in 2022. December 31, 2022 Estimate that 40% of accounts receivable at the end of the year will not be received. Cash Accounts Receivable December 31, 2021 December 31, 2021 December 31, 2022 01 December 31, 2022 Allowance for Uncollectible Accounts December 31, 2021 December 31, 2022