My post on another site has prompted me to ask this question. What is the rule of using 'last' in a sentence?
When did you revise this rule last?
When did you last revise this rule?
I last revised this rule three days ago.
I revised this rule last three days ago.
I revised this rule three days ago last.
I revised last this rule three days ago. (I think here it is at a wrong position)
Are there any other possible versions?