difference between have had done, have done,and did

[zippy]

(I think I posted this message at the wrong place earlier. I cannot
find it. It this is a duplicate, please excuse my error.)

What are the differences between the "time sense" expressed by
the following sentences:

(i) They have had done a good job.
(ii) They have done a good job.
(iii) They did a good job.

My understanding is that (ii) is present perfect and (iii) is past indefinite,
so what is (i) ? And under what circumstance should you use it ?
Much obliged

Z

[Tdol]

(I think I posted this message at the wrong place earlier. I cannot
find it. It this is a duplicate, please excuse my error.)

What are the differences between the "time sense" expressed by
the following sentences:

(i) They have had done a good job. this one is wrong
(ii) They have done a good job. this is related to now- completed recently, etc
(iii) They did a good job. this is not related to now

My understanding is that (ii) is present perfect and (iii) is past indefinite (I'd say PAST SIMPLE),
so what is (i) ? And under what circumstance should you use it ? NONE!!!
Much obliged

Z

[Tdol]

I deleted the other post. :D

[zippy]

Thanks.