Since there can't be any changes in the "starting XI" till the end, these are the 11 Juve players who played the most minutes this season, and also how it would look as a formation:
Storari
Motta-Bonucci-Chiellini-Grosso
Aquilani-Melo-Marchisio
Krasic-Del Piero-Pepe
Bench: Buffon, Grygera, Sorensen, Sissoko, Iaquinta, Matri, Quagliarella
01. Chiellini 3780 minutes
02. Bonucci 3694
03. Marchisio 3424
04. Krasic 3096
05. Felipe Melo 2864
06. Pepe 2826
07. Aquilani 2649
08. Del Piero 2611
09. Storari 2597
10. Motta 2114
11. Grosso 1660
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12. Sissoko 1602
13. Grygera 1389
14. Buffon 1353
15. Quagliarella 1307
16. Iaquinta 1245
17. Matri 1235
18. Sorensen 1228
Of course, the impression it gives that we played 4-3-3 most of the season, is wrong.