Replace the underlined words in the sentence with synonyms that carry the same meaning.
I can't comprehend the complexity of the task.
I can't fathom the intricacy of the task.
Complete the following task based on the instruction and optional input provided.### Instruction:
Replace the underlined words in the sentence with synonyms that carry the same meaning.

### Input:
I can't comprehend the complexity of the task.

### Output:
I can't fathom the intricacy of the task.