text 850 1528 1506 1993
text 151 1847 806 1994
equation 884 1409 1503 1512
text 851 1219 1506 1352
text 851 191 1508 1108
text 151 786 808 1574
equation 181 1655 810 1807
text 151 375 808 626
equation 194 706 803 747
equation 981 1157 1503 1193
equation 178 299 803 333
text 150 190 504 218
header 570 130 1098 154