Lct := -136080*t^5 + 544320*t^4*x - 589680*t^3*x^2 - 524880*t^6*x^2 + 181440*t^2*x^3 - 2118960*t^5*x^3 + 21600*t*x^4 + 1185840*t^4*x^4 - 7200*x^5 + 706320*t^3*x^5 + 2099520*t^6*x^5 - 90720*t^2*x^6 + 11702880*t^5*x^6 - 6220800*t^4*x^7 + Dt*(5040*t^3 - 797040*t^6 - 20160*t^2*x + 3324240*t^5*x + 21600*t*x^2 - 4011120*t^4*x^2 - 3149280*t^7*x^2 - 7200*x^3 + 1782720*t^3*x^3 - 11586240*t^6*x^3 - 144000*t^2*x^4 + 11041920*t^5*x^4 - 64800*t*x^5 - 557280*t^4*x^5 + 12597120*t^7*x^5 + 7200*x^6 + 72000*t^3*x^6 + 68545440*t^6*x^6 + 241920*t^2*x^7 - 35769600*t^5*x^7) + Dt^2*(12240*t^4 - 972000*t^7 - 51480*t^3*x + 4218480*t^6*x + 63360*t^2*x^2 - 5569560*t^5*x^2 - 3936600*t^8*x^2 - 28800*t*x^3 + 3042720*t^4*x^3 - 13073400*t^7*x^3 + 3600*x^4 - 591840*t^3*x^4 + 18283320*t^6*x^4 - 12240*t^2*x^5 - 6774840*t^5*x^5 + 15746400*t^8*x^5 - 7200*t*x^6 + 1046880*t^4*x^6 + 83592000*t^7*x^6 + 564480*t^3*x^7 - 42768000*t^6*x^7) + Dt^3*(7920*t^5 - 421200*t^8 - 34920*t^4*x + 1898640*t^7*x + 48000*t^3*x^2 - 2706480*t^6*x^2 - 1749600*t^9*x^2 - 26160*t^2*x^3 + 1691640*t^5*x^3 - 5184000*t^8*x^3 + 4800*t*x^4 - 470520*t^4*x^4 + 9927360*t^7*x^4 + 65640*t^3*x^5 - 5730480*t^6*x^5 + 6998400*t^9*x^5 - 21600*t^2*x^6 + 956160*t^5*x^6 + 36223200*t^8*x^6 + 351360*t^4*x^7 - 18144000*t^7*x^7) + Dt^4*(1920*t^6 - 76950*t^9 - 8850*t^5*x + 359640*t^8*x + 13320*t^4*x^2 - 547830*t^7*x^2 - 328050*t^10*x^2 - 8220*t^3*x^3 + 376770*t^6*x^3 - 854550*t^9*x^3 + 1800*t^2*x^4 - 130470*t^5*x^4 + 2163510*t^8*x^4 + 32850*t^4*x^5 - 1584090*t^7*x^5 + 1312200*t^10*x^5 - 9600*t^3*x^6 + 280380*t^6*x^6 + 6617700*t^9*x^6 + 82080*t^5*x^7 - 3240000*t^8*x^7) + Dt^5*(186*t^7 - 5994*t^10 - 894*t^6*x + 28998*t^9*x + 1452*t^5*x^2 - 46818*t^8*x^2 - 26244*t^11*x^2 - 984*t^4*x^3 + 34602*t^7*x^3 - 58968*t^10*x^3 + 240*t^3*x^4 - 13986*t^6*x^4 + 194400*t^9*x^4 + 4818*t^5*x^5 - 167184*t^8*x^5 + 104976*t^11*x^5 - 1380*t^4*x^6 + 30984*t^7*x^6 + 515484*t^10*x^6 + 7680*t^6*x^7 - 246240*t^9*x^7) + Dt^6*(6*t^8 - 162*t^11 - 30*t^7*x + 810*t^10*x + 52*t^6*x^2 - 1377*t^9*x^2 - 729*t^12*x^2 - 38*t^5*x^3 + 1077*t^8*x^3 - 1377*t^11*x^3 + 10*t^4*x^4 - 489*t^7*x^4 + 5913*t^10*x^4 + 209*t^6*x^5 - 5751*t^9*x^5 + 2916*t^12*x^5 - 60*t^5*x^6 + 1104*t^8*x^6 + 13932*t^11*x^6 + 240*t^7*x^7 - 6480*t^10*x^7);