text 151 191 806 1965
text 851 1927 1506 1994
text 851 191 1508 1408
equation 870 1639 1503 1727
text 851 1754 1480 1785
text 852 1545 1504 1611
equation 998 1838 1503 1894
equation 1019 1460 1503 1510
header 564 134 1094 152