text 151 1949 805 2020
text 851 365 1505 473
text 851 652 1508 1809
equation 852 488 1542 639
text 151 1797 806 1863
equation 967 1829 1503 1865
equation 938 303 1417 345
equation 307 1875 649 1927
text 852 215 1505 282
equation 1015 1939 1343 2021
equation 157 1647 799 1761
equation 175 1323 788 1492
text 151 217 808 1279
text 152 1543 806 1616
text 852 1885 985 1913
header 572 156 1086 180