HELLO DHANANJAY PATEL..
I agree with aabid baba here… he is right the total total number of delays also depends on the total number of the bidirectional components you are using in your system implementation..
..and also For signal result at the output of the bidirectional components u are using for ur system there must be an input signal already at other inputs of that component.. Hopefully this will help u some extent..
Thanks & regards