### Component 1 (Lines 1-14)
- **Description:** Understanding the problem and setting the initial goal.
- **Plan:** Lines 1-3
- **Prompt:** Understand the problem statement and set the initial goal for solving it.
- **Execution:** Lines 4-14
- **Comment:** Lines not found

### Component 2 (Lines 15-20)
- **Description:** Checking if the largest possible number with even digits (8888) is a multiple of 9.
- **Plan:** Lines 15-16
- **Prompt:** Check if 8888 is a multiple of 9 by calculating the sum of its digits.
- **Execution:** Lines 17-20
- **Comment:** Lines not found

### Component 3 (Lines 21-32)
- **Description:** Attempting to adjust the digits of 8888 to make it a multiple of 9.
- **Plan:** Lines 21-22
- **Prompt:** Try to adjust the digits of 8888 to make the sum of its digits a multiple of 9.
- **Execution:** Lines 23-32
- **Comment:** Lines not found

### Component 4 (Lines 33-48)
- **Description:** Realizing the impossibility of reducing the sum by an odd number.
- **Plan:** Lines 33-34
- **Prompt:** Calculate how much the sum needs to be reduced and determine if it's possible.
- **Execution:** Lines 35-48
- **Comment:** Lines not found

### Component 5 (Lines 49-83)
- **Description:** Identifying the correct target sum for the digits.
- **Plan:** Lines 49-50
- **Prompt:** Determine the next possible multiple of 9 below 32 and check if it can be achieved with even digits.
- **Execution:** Lines 51-83
- **Comment:** Lines not found

### Component 6 (Lines 84-140)
- **Description:** Finding the largest number with a digit sum of 18.
- **Plan:** Lines 84-85
- **Prompt:** Find the largest four-digit number with even digits where the sum of the digits is 18.
- **Execution:** Lines 86-140
- **Comment:** Lines not found

### Component 7 (Lines 141-189)
- **Description:** Exploring other possibilities with different thousands digits.
- **Plan:** Lines 141-142
- **Prompt:** Explore numbers with thousands digits less than 8 to see if a larger number can be found.
- **Execution:** Lines 143-189
- **Comment:** Lines not found

### Component 8 (Lines 190-218)
- **Description:** Continuing exploration with different thousands digits.
- **Plan:** Lines 190-191
- **Prompt:** Continue exploring numbers with thousands digits less than 8 to find a larger number.
- **Execution:** Lines 192-218
- **Comment:** Lines not found

### Component 9 (Lines 219-221)
- **Description:** Validating the case where the thousands digit is 0.
- **Plan:** Lines 219-220
- **Prompt:** Validate if a four-digit number can have a thousands digit of 0.
- **Execution:** Line 221
- **Comment:** Lines not found

### Component 10 (Lines 222-282)
- **Description:** Confirming 8820 as the largest number and verifying its properties.
- **Plan:** Lines 222-223
- **Prompt:** Confirm that 8820 is the largest number and verify its properties.
- **Execution:** Lines 224-282
- **Comment:** Lines not found

### Component 11 (Lines 283-288)
- **Description:** Verifying that 8820 meets all the problem's criteria.
- **Plan:** Lines 283-284
- **Prompt:** Verify that 8820 meets all the problem's criteria.
- **Execution:** Lines 285-288
- **Comment:** Lines not found

### Component 12 (Lines 289-413)
- **Description:** Thoroughly checking for any larger numbers.
- **Plan:** Lines 289-290
- **Prompt:** Thoroughly check for any larger numbers that meet the criteria.
- **Execution:** Lines 291-413
- **Comment:** Lines not found

### Component 13 (Lines 414-443)
- **Description:** Final confirmation that 8820 is the solution.
- **Plan:** Lines 414-415
- **Prompt:** Confirm that 8820 is the solution by checking the next few numbers.
- **Execution:** Lines 416-443
- **Comment:** Lines not found

### Component 14 (Lines 444-445)
- **Description:** Presenting the final answer.
- **Plan:** Lines not found
- **Prompt:** Present the final answer.
- **Execution:** Lines 444-445
- **Comment:** Lines not found