text 851 462 1507 1538
equation 205 1781 805 1986
text 851 1892 1507 1989
equation 906 1766 1505 1878
text 151 1005 806 1759
text 851 1685 1507 1749
equation 905 1555 1505 1671
equation 907 268 1505 444
equation 207 623 805 985
text 151 192 807 602
text 851 191 1505 257
header 470 128 1188 156