548-430= 783-460= 898-584= 830-54= 979-605=
897-727= 750-253= 659-567= 577-545= 641-353=
940-456= 979-488= 680-502= 637-631= 911-75=
876-648= 599-481= 834-776= 569-366= 975-883=
894-862= 958-669= 765-246= 804-396= 190-107=
787-182= 996-819= 298-291= 977-253= 896-231=
960-39= 537-309=