lst:=[[arccsc(a*x^5)/x,x,1],
[x^3*arccsc(x^(1/2)),x,1],
[x^2*arccsc(x^(1/2)),x,1],
[x*arccsc(x^(1/2)),x,1],
[arccsc(x^(1/2)),x,1],
[arccsc(x^(1/2))/x,x,1],
[arccsc(x^(1/2))/x^2,x,1],
[arccsc(x^(1/2))/x^3,x,1],
[x^2*arccsc(a/x),x,1],
[x*arccsc(a/x),x,1],
[arccsc(a/x),x,1],
[arccsc(a/x)/x,x,1],
[arccsc(a/x)/x^2,x,1],
[arccsc(a/x)/x^3,x,1],
[arccsc(a/x)/x^4,x,1],
[arccsc(a*x^n)/x,x,1],
[x^4*arccsc(b*x+a),x,1],
[x^3*arccsc(b*x+a),x,1],
[x^2*arccsc(b*x+a),x,1],
[x*arccsc(b*x+a),x,1],
[arccsc(b*x+a),x,1],
[arccsc(b*x+a)/x,x,1],
[arccsc(b*x+a)/x^2,x,1],
[arccsc(b*x+a)/x^3,x,1],
[arccsc(b*x+a)/x^4,x,1],
[arccsc(b*x+a)/x^5,x,1],
[x^3*arccsc(b*x+a)^2,x,1],
[x^2*arccsc(b*x+a)^2,x,1],
[x*arccsc(b*x+a)^2,x,1],
[arccsc(b*x+a)^2,x,1],
[arccsc(b*x+a)^2/x,x,1],
[arccsc(b*x+a)^2/x^2,x,1],
[x^2*arccsc(b*x+a)^3,x,1],
[x*arccsc(b*x+a)^3,x,1],
[arccsc(b*x+a)^3,x,1],
[arccsc(b*x+a)^3/x,x,1],
[arccsc(b*x+a)^3/x^2,x,1],
[x^3*arccsc(b*x^4+a),x,1],
[x^(-1+n)*arccsc(a+b*x^n),x,1],
[arccsc(c*exp(b*x+a)),x,1],
[exp(arccsc(a*x))*x^2,x,1],
[exp(arccsc(a*x))*x,x,1],
[exp(arccsc(a*x)),x,1],
[exp(arccsc(a*x))/x,x,1],
[exp(arccsc(a*x))/x^2,x,1],
[exp(arccsc(a*x))/x^3,x,1],
[exp(arccsc(a*x))/x^4,x,1],
[exp(arccsc(a*x))/x^5,x,1],
[arccsc(b*x+a)/(a*d/b+d*x),x,1]]