It took him two hours more/two more hours

[Ryan.]

Hi.
Which one is correct to say?
1-It took him two hours more to train the first group than the second group.
2-It took him two more hours to train the first group than the second group.
3-It took two hours more for him to train the first group than the second group.
4-It took two more hours for him to train the first group than the second group.

Thanks.

 

[MikeNewYork]

Hi.
Which one is correct to say?
1-It took him two hours more to train the first group than the second group.
2-It took him two more hours to train the first group than the second group.
3-It took two hours more for him to train the first group than the second group.
4-It took two more hours for him to train the first group than the second group.

Thanks.

Numbers 1 and 3 are OK. Numbers 2 and 4 are wrong.