C = Fellowship, U = Union, A = support, S = security (41 CUAS;.During the development of the course is organized students into pairs. This couple is called: do slivers do, Word of the language Kekchí meaning brother or inseparable companion;?? They train together, they eat together, they meet together 40 sanctions; even if one of the two is not guilty ) and receive prizes together ( although one of two ) does not deserve it.