---- ------ ----- ------ ---- ---- ----- ---- ---- ---- 9 8 7 6 5 4 3 2 1 0 19 18 17 16 15 14 13 12 11 10 29 28 27 26 25 24 23 22 21 20 39 38 37 36 35 34 33 32 31 30 nine eight seven six five four three two one zero IX VIII VII VI V IV III II I *