text 851 1559 1506 1995
text 150 191 806 1982
text 851 191 1508 887
text 852 1342 1505 1444
equation 877 1233 1478 1321
text 851 983 1507 1208
equation 968 1472 1503 1543
equation 1014 914 1340 954
header 254 130 1408 154