please show me how you get the answer of 1a, thanks

Exercises 1. (a) List all the minimum s-t cuts in the flow network pictured in Fig- ure 7.24. The capacity of each edge appears as a label next to the edge. (b) What is the minimum capacity of an s-t cut in the flow network in Figure 7.25? Again, the capacity of each edge appears as a label next to the edge. Figure 7.24 What are the minimum s-t cuts in this flow network? 2. Figure 7 26 shows a flow network on which an s-t flow has been computed