I have no knowledge of how to trace an execution. How can I code it? I understand the predictions but I dont know how to code it.

EXERCISE 5.15 Trace the execution of the following JavaScript statements and try to predict their behavior. For each assignment, fill in the values of the variables in their corresponding boxes-even those values that aren't changed. c0 word1 word1 'foo'; word2 'foo'bar; word3 'biz; word1 word2 word3; word1 word2 wordl word2 word3 word1 word2 word2 word2; word2 word3 wordi word2 word3