bullion circuits look you know something like this so this is a boolean circuit which is taking three bits of input okay it's taking the aunt of each pair of bits and then taking the or of those bits and so it's outputting a and B or B NC or ANC okay in general a circuit of size s for us will take a fixed number of zero one inputs and it will output let's say a single bit you can generalize it to outputting mobile bits for SS a single bit then for F times it's going to take two previously computed bits maybe some