Dear @Guardian25,
Now the exercise 1 has no obvious consecutives now. However, on traditional 4 part harmony major chords should only double its root or fifth but no its third since it will be too bright. In your IV6 and I6 chords third is double, which is not good in tra. 4 part harmony. Minor chords, like the ii6 chord, can double its third.
In a strict sense, the last two chords has hidden octaves, since they both reach D in similar motion, with the leap from A to D in soprano bigger than that step of C# to D in tenor. But that's not allowes in the strictest sense only.
Henry