lst:=[[(d*x+c)^3*sech(b*x+a),x,1],
[(d*x+c)^2*sech(b*x+a),x,1],
[(d*x+c)*sech(b*x+a),x,1],
[sech(b*x+a)/(d*x+c),x,0],
[(d*x+c)^3*sech(b*x+a)^2,x,1],
[(d*x+c)^2*sech(b*x+a)^2,x,1],
[(d*x+c)*sech(b*x+a)^2,x,1],
[sech(b*x+a)^2/(d*x+c),x,0],
[(d*x+c)^3*sech(b*x+a)^3,x,1],
[(d*x+c)^2*sech(b*x+a)^3,x,1],
[(d*x+c)*sech(b*x+a)^3,x,1],
[sech(b*x+a)^3/(d*x+c),x,0],
[x/sech(x)^(3/2)-1/3*x*sech(x)^(1/2),x,1],
[x/sech(x)^(5/2)-3/5*x/sech(x)^(1/2),x,1],
[x/sech(x)^(7/2)-5/21*x*sech(x)^(1/2),x,1],
[x^2/sech(x)^(3/2)-1/3*x^2*sech(x)^(1/2),x,1]]