Count to 10,000 and Down to -10,000

8681.

8680.

8679.

8678.

8677.

8676.

8675.

8674.

8673.

8672.

8671.

8670.

8669.

8668.

8667.

8666.

8665.

8664.

8663.

8662.

8661.

8660.

8659.

8658.

8657.

8656.

8655.

8654.

8653.

8652.

8651.

8650.

8649.

8648.

8647.

8646.

8645.

8644.

8643.

8642.