text 851 1881 1506 1994
text 151 1878 806 1994
text 851 1291 1508 1561
text 151 190 808 1529
text 851 190 1506 1052
equation 241 1588 805 1838
equation 951 1569 1505 1853
equation 854 1062 1511 1246
header 564 128 1100 157