text 851 1064 1509 1994
equation 867 732 1514 1043
text 852 655 1506 714
equation 222 1386 804 1454
text 151 1757 806 1870
text 151 191 808 1380
equation 167 1874 788 1952
text 162 1963 805 1996
text 151 1467 806 1693
equation 815 389 1512 638
equation 152 1692 647 1757
text 857 339 1504 373
equation 828 238 1496 304
text 850 188 1082 220
header 572 130 1088 154