Draw the cash flows for the following scenarios:

Scenario 1 Cash flows at the end of the period: $ 1,000 in one year, $ 3,000 in year 4, $ 10,000 in year 8.

Scenario 2 $ 500 at the end of year 2, $ 1,000 at the end of year 5, $ 3,000 at the beginning of year 7, $ 10,000 at the end of year 12, - $ 2,000 at the beginning of year 3.

Scenario 3 Five equal income of $ 2,000 at the beginning of the period beginning with year 3, two income of $ 6,000 at the end of the year beginning with year 9. Two expenses of $ 1,500 at the beginning of year 11 and 12.