text 851 1767 1506 2002
text 851 980 1508 1443
text 151 1436 807 1941
text 151 381 807 861
text 850 1571 1508 1640
text 151 979 806 1326
text 850 317 1506 643
equation 942 1470 1397 1542
equation 278 1962 678 2001
equation 307 878 704 952
equation 178 1347 778 1420
equation 975 1667 1365 1738
equation 158 194 800 348
equation 952 754 1448 792
equation 856 192 1504 292
header 170 132 1490 154
text 866 834 1278 864
equation 946 904 1470 930
text 858 688 1318 722