text 851 1641 1508 1994
text 851 310 1506 539
text 851 649 1508 1524
text 151 755 807 1716
equation 173 1737 805 1927
text 151 1929 807 1989
equation 1013 1547 1505 1618
equation 228 669 805 730
equation 868 562 1488 626
text 151 192 808 649
equation 889 249 1468 283
header 376 130 1283 158
text 850 196 1079 217