Excel 2007 : Count 3 criteria in specified cells

I want to count 3 criteria ( T2, T3, B) in specified cells ( light blue cells)
Here I did it only for T2 with "countif" but it`s very long.
Any other ideas?
here I attached the sheet.

If you can add one more column between AL and AM with an "S" header, then try:

=SUMPRODUCT(COUNTIFS($C$1:$AL$1,"F",$C$2:$AL$2,{"T2","T3","B"}))+SUMPRODUCT(COUNTIFS($C$1:$AL$1,"F",$D$2:$AM$2,{"T2","T3","B"}))

else, if you can insert a row above or below the first row that somehow marks the "blue" columns, then you can use a shorter formula (i.e. half the size as above) using that mark as criteria....

You can also use actual dates instead of just the letter, to use Weekday() function for criteria to get only Friday and Saturday dates....