There were four groups in qualifying rounds as A, B, C and D. Each groups had 3 teams and two of them qualified for super 8.
Now consider A1, A2, B1, B2, C1 , C2 , D1 and D2. All with suffix 1 are the having maximum point in each group with suffix 2 were 2nd in the qualifying round.
e.g: Group A : India, Afghanistan and England : Since India and England qualified based on the points.
India has maximum point in group so India is A1 while England is 2nd it's A2.
So the case with other countries in the respective groups:
AUS (B1), SA (C1) and Pakistan (D1)
WI (B2), SL(C2) and NZL(D2)
Now in super 8 , we have two groups : E and F.
E consist of A2, B2, C2 and D2 - Eng, WI, SL and NZL
F consist of A1, B1, C1 and D1 - Ind, Aus, SA and Pak.
For better understanding : refer cricbuzz T20 WC 2012 Schedule | International Cricket Fixtures | Cricket Schedule | Cricbuzz.com
Now time to tame Pakistan, Aus and SA.
Believe me India performance is directly proportional to strength of opponents.