expr test1 = (

       + G47(1,1,1,0,1,2,1,0,0) * (
          + rat_( - s^3*t^2*mt^4,s^4*t^2 - 6*s^4*t*mt^2 + 8*s^4*mt^4 + 3*s^3*t^3 - 8*s^3*t^2*mt^2 - 12*s^3*t*mt^4 + 16*s^3*mt^6 + 3*
         s^2*t^4 - 4*s^2*t^2*mt^4 - 32*s^2*t*mt^6 + s*t^5 + 12*s*t^3*mt^4 + 16*s*t^2*mt^6 - 2*t^5*mt^2 - 4*t^4*mt^4)*rat_(8*ep,1 + 6*
         ep + 8*ep^2)
          + rat_( - s^3*t^3*mt^2 - s^2*t^4*mt^2,s^4*t^2 - 6*s^4*t*mt^2 + 8*s^4*mt^4 + 3*s^3*t^3 - 8*s^3*t^2*mt^2 - 12*s^3*t*mt^4 +
         16*s^3*mt^6 + 3*s^2*t^4 - 4*s^2*t^2*mt^4 - 32*s^2*t*mt^6 + s*t^5 + 12*s*t^3*mt^4 + 16*s*t^2*mt^6 - 2*t^5*mt^2 - 4*t^4*mt^4)*
         rat_( - 3*ep,1 + 6*ep + 8*ep^2)
          + rat_( - 4*s^4*t*mt^4 + 2*s^3*t^3*mt^2 - 2*s^3*t^2*mt^4 - 8*s^3*t*mt^6 + s^2*t^4*mt^2 + 8*s^2*t^2*mt^6 - s*t^5*mt^2 - 2*s
         *t^4*mt^4,s^4*t^2 - 6*s^4*t*mt^2 + 8*s^4*mt^4 + 3*s^3*t^3 - 8*s^3*t^2*mt^2 - 12*s^3*t*mt^4 + 16*s^3*mt^6 + 3*s^2*t^4 - 4*s^2*
         t^2*mt^4 - 32*s^2*t*mt^6 + s*t^5 + 12*s*t^3*mt^4 + 16*s*t^2*mt^6 - 2*t^5*mt^2 - 4*t^4*mt^4)*rat_( - ep,1 + 6*ep + 8*ep^2)
          + rat_( - s^4*t*mt^4 - s^2*t^3*mt^4,s^4*t^2 - 6*s^4*t*mt^2 + 8*s^4*mt^4 + 3*s^3*t^3 - 8*s^3*t^2*mt^2 - 12*s^3*t*mt^4 + 16*
         s^3*mt^6 + 3*s^2*t^4 - 4*s^2*t^2*mt^4 - 32*s^2*t*mt^6 + s*t^5 + 12*s*t^3*mt^4 + 16*s*t^2*mt^6 - 2*t^5*mt^2 - 4*t^4*mt^4)*
         rat_(4*ep,1 + 6*ep + 8*ep^2)
          )

       + G59(1,0,1,1,1,1,1,0,0) * (
          + rat_(t^2*mt^2,s^2*t - 2*s^2*mt^2 + 2*s*t^2 + t^3 + 2*t^2*mt^2)*rat_( - 1 - 10*ep,4*ep)
          + rat_(t^2*mt^2,s^2*t - 2*s^2*mt^2 + 2*s*t^2 + t^3 + 2*t^2*mt^2)*rat_(1 + 2*ep,4*ep)
          + rat_(t^3,s^2*t - 2*s^2*mt^2 + 2*s*t^2 + t^3 + 2*t^2*mt^2)*rat_( - 1 - 11*ep,8*ep)
          + rat_(t^3,s^2*t - 2*s^2*mt^2 + 2*s*t^2 + t^3 + 2*t^2*mt^2)*rat_(1 + 3*ep,8*ep)
          + rat_(t^7, - s^5*t^2 + 6*s^5*t*mt^2 - 8*s^5*mt^4 - 4*s^4*t^3 + 14*s^4*t^2*mt^2 + 4*s^4*t*mt^4 - 16*s^4*mt^6 - 6*s^3*t^4
          + 8*s^3*t^3*mt^2 + 16*s^3*t^2*mt^4 + 16*s^3*t*mt^6 - 4*s^2*t^5 - 8*s^2*t^3*mt^4 + 16*s^2*t^2*mt^6 - s*t^6 + 2*s*t^5*mt^2 - 8
         *s*t^4*mt^4 - 16*s*t^3*mt^6 + 2*t^6*mt^2 + 4*t^5*mt^4)*rat_(-1,32 + 32*ep)
 ....