lst=[["(b*x+a)^4*(D*x^3+C*x^2+B*x+A)","x",1],
["(b*x+a)^3*(D*x^3+C*x^2+B*x+A)","x",1],
["(b*x+a)^2*(D*x^3+C*x^2+B*x+A)","x",1],
["(b*x+a)*(D*x^3+C*x^2+B*x+A)","x",1],
["D*x^3+C*x^2+B*x+A","x",1],
["(D*x^3+C*x^2+B*x+A)/(b*x+a)","x",1],
["(D*x^3+C*x^2+B*x+A)/(b*x+a)^2","x",1],
["(D*x^3+C*x^2+B*x+A)/(b*x+a)^3","x",1],
["(D*x^3+C*x^2+B*x+A)/(b*x+a)^4","x",1],
["(D*x^3+C*x^2+B*x+A)/(b*x+a)^5","x",1],
["(D*x^3+C*x^2+B*x+A)/(b*x+a)^6","x",1],
["(D*x^3+C*x^2+B*x+A)/(b*x+a)^7","x",1],
["(2*x^3+3*x^2+4)/(1+x)^4","x",1],
["(x^4-x^3+3*x^2-2*x+7)/(2+x)","x",1],
["x*(d*x^4+c)^2/(b*x+a)","x",1],
["x*(d*x^4+c)^2/(b*x+a)^2","x",1],
["x*(d*x^4+c)^2/(b*x+a)^3","x",1],
["(b*x+a)^(3/2)*(D*x^3+C*x^2+B*x+A)","x",1],
["(b*x+a)^(1/2)*(D*x^3+C*x^2+B*x+A)","x",1],
["(D*x^3+C*x^2+B*x+A)/(b*x+a)^(1/2)","x",1],
["(D*x^3+C*x^2+B*x+A)/(b*x+a)^(3/2)","x",1],
["(D*x^3+C*x^2+B*x+A)/(b*x+a)^(5/2)","x",1],
["(D*x^3+C*x^2+B*x+A)/(b*x+a)^(7/2)","x",1],
["(e*x^2+d*x+c)/(b*x+a)^(1/2)","x",1],
["(e*x^2+d*x+c)^2/(b*x+a)^(1/2)","x",1],
["(e*x^2+d*x+c)^3/(b*x+a)^(1/2)","x",1],
["(f*x^3+e*x^2+d*x+c)/(b*x+a)^(1/2)","x",1],
["(f*x^3+e*x^2+d*x+c)^2/(b*x+a)^(1/2)","x",1],
["(f*x^3+e*x^2+d*x+c)^3/(b*x+a)^(1/2)","x",1],
["(b*x+a)^m*(D*x^3+C*x^2+B*x+A)","x",1]]