Consider a 4 stage pipeline processor. The number of cycles needed by the four…

Consider a 4 stage pipeline processor.   The number of cycles needed by the four instructions I1, I2, I3, I4 in stages S1, S2, S3, S4 is shown below:

What is the number of cycles needed to execute the following loop? For (i=1 to 2) {I1; I2; I3; I4;}