text 151 583 810 914
text 850 190 1510 1987
text 150 1563 808 1688
text 151 1873 805 1994
text 151 1157 810 1421
equation 255 1431 803 1547
equation 166 419 803 564
text 151 191 810 410
equation 227 1694 803 1840
equation 186 919 803 1138
header 584 128 1078 155