0*4, 1*4, 2*4,3*4, 4*4, 5*4, 6*4, 7*4, 8*4, 9*4, 10*4, 11*4, 12*4, 13*4, 14*4, 15*4, 16*4, 17*4, 18*4, 19*4, 18*4, 17*4, 16*4, 15*4, 14*4, 13*4, 12*4, 11*4, 10*4, 9*4, 8*4, 7*4, 6*4, 5*4, 4*4, 3*4,2*4, 1*4,
