text 851 1782 1506 1994
text 151 1273 806 1701
text 851 1131 1507 1648
text 151 558 807 919
equation 871 1670 1505 1758
equation 877 782 1505 849
text 851 878 1508 1014
text 851 191 1507 761
equation 876 1043 1505 1109
equation 169 1730 814 1986
equation 169 418 805 528
text 151 190 806 388
equation 168 948 805 1226
header 580 122 1083 155