text 151 1508 808 1989
text 851 1896 1506 1994
text 851 983 1507 1472
text 851 188 1508 554
text 851 694 1505 756
text 150 192 807 1430
text 850 858 1507 922
equation 1081 1503 1275 1585
equation 1097 585 1259 667
text 850 1760 1505 1823
text 851 1598 1505 1662
equation 899 793 1458 826
equation 1066 1829 1289 1862
equation 858 1690 1499 1728
equation 293 1452 757 1485
equation 1085 928 1271 961
header 596 128 1057 158