text 146 1820 814 1958
text 885 1556 1554 1958
text 147 154 816 757
text 885 1028 1552 1445
text 147 897 816 1593
text 885 151 1553 485
text 885 594 1553 924
equation 935 1460 1501 1537
equation 229 773 730 884
equation 306 1609 655 1805
equation 951 508 1487 575
equation 1059 942 1376 1009