11. In the beginning its mission was to contribute to the development of the cooperative system in Bulgaria. 12. Kramer also said that Digitalmindsoft was designing a new cooperative system relative to " Assault Squad ". 13. Our employees have worked hard and our owner-members have continued their strong support of their cooperative system . 14. The game featured a two-player cooperative system in which the on-screen characters were connected by magic rings. 15. A consortium of 32 partners will test the energy efficiency of cooperative systems and services until March 2013. 16. Such a cooperative system might stand a chance if the players'interests were not stacked so heavily against it. 17. Norinchukin Bank Ltd ., the world's seventh largest bank, stands at the top of the agricultural cooperative system . 18. They serve as hosts for Servas, an international cooperative system which promotes global understanding by opening people's homes to travelers. 19. CU Cooperative Systems Inc ., a cooperative of about 300 credit unions, is also a member of the no-fee alliance. 20. On 3 August, Ben Salah presented Bourguiba with a decree-law bill about the generalization of the cooperative system in agriculture.