SW := 1/8382528*v[6]^15-1/36*v[6]^4*v[5]^4*v[4]+1/336*v[5]^2*v[6]^8*v[4]-1/3*v [4]^2*v[6]*v[5]^4+1/2*v[4]^3*v[6]^2*v[5]^2+1/4*v[4]^5-2*v[4]^2*v[6]*v[3]*v[5]-\ 1/6*v[4]*v[3]*v[5]*v[6]^4+v[4]*v[6]*v[2]*v[5]^2-v[4]*v[3]^2-v[2]^2*v[6]+1/1008 *v[2]*v[6]^8+1/3*v[5]^4*v[2]-v[5]^2*v[1]-1/12*v[6]^4*v[1]-1/756*v[6]^7*v[5]^4-\ 1/33264*v[5]^2*v[6]^11+1/27*v[5]^6*v[6]^3-1/72*v[4]^3*v[6]^6+1/12*v[4]^4*v[6]^ 3+1/399168*v[4]*v[6]^12-1/3024*v[4]^2*v[6]^9-1/9*v[4]*v[5]^6+1/3*v[6]^3*v[3]^2 -1/126*v[3]*v[6]^7*v[5]-2/9*v[5]^3*v[3]*v[6]^3+2/3*v[4]*v[5]^3*v[3]+1/6*v[2]*v [6]^4*v[5]^2-1/2*v[4]^2*v[6]^2*v[2]+1/12*v[2]*v[4]*v[6]^5+2*v[5]*v[3]*v[2]+v[4 ]*v[6]*v[1];