Table:
0
A
B
C
D
E
1
Round
Main date
Number of fixtures
Clubs
New entries this round
2
Preliminary round
27 August 2008
16
48 → 32
none
3
First round
23 and 24 September 2008
16
32 → 16
16
4
Second round
29 October 2008
8
16 → 8
none
5
Quarter-finals
12 and 26 November 2008
8
8 → 4
none
6
Semi-finals
4 and 18 March 2009
4
4 → 2
none
7
Final
13 and 28 May 2009
2
2 → 1
none

Questions and formulas:
Question: What are the club number for the first round?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="first round"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,A2:A7="first round"),4))
Level: medium
Question: when there were 48 → 32 clubs?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="48 → 32"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,D2:D7="48 → 32"),5))
Level: medium