Based on the following cash flows, determine the patterns of each cash flow. Year SS TT UU w XX YY 0 300,000 1 120,000 100,000 150,000 200,000 2 120,000 100,000 90,000 200,000 3 120,000 100,000 200,000 4 120,000 100,000 450,000 115,000 120,000 120,000 200,000