Tolong jelaskan mengenai Format dari Liga Champions AFC 2007

A total of 28 clubs are divided into 7 groups of four, based on region i.e. East Asian and Southeast Asian clubs are drawn in Group E to F, while rest are grouped in Group A to D. Each club plays double round-robin (home and away) against fellow three group members, a total of 6 matches each. Clubs receive 3pts for a win, 1pt for a tie, 0pts for a loss. The clubs are ranked according to points and tie breakers are in following order:

Points earned between the clubs in question

Goal Differential between the clubs in question

Points earned within the group

Goal Differential within the group

Goal For within the group

The seven group winners along with the defending champions qualifies to the quarter-finals.