text 147 1865 815 1958
text 884 156 1553 1396
text 885 1519 1552 1854
equation 917 1874 1551 1962
text 147 150 815 1662
text 147 1734 816 1799
equation 950 1415 1484 1498
equation 282 1813 813 1853
equation 149 1676 810 1721