What will be the password for friday be?

Shruti’s daughter Archana  need to be picked from the school every day.
Shruti asks one of her colleagues to pick her from school. 
Shruti devised a password mechanism to confirm that Archana goes with the correct person only.
The password on Monday was SAM16.
The password on
Wednesday was RCW39.
What will the password for Friday be?
 
Challenge to all 

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The Answer is TAF56 or TEF56
T – 5th Letter of Shruti
A – 5th Letter of Archana ( E – 5th letter , A – 1 , B – 2 , C -3 , D -4 , E -5)
F – stands for Friday
5 – 5th day of the week starting monday
6 – No of letters in Friday.