text 151 1390 806 1804
text 151 1892 806 1994
text 850 667 1508 1994
text 151 811 806 951
equation 172 1181 788 1363
text 151 1088 804 1154
equation 300 979 803 1061
text 151 190 806 720
equation 857 575 1510 666
equation 320 749 803 783
equation 307 1831 803 1867
text 851 191 1507 552
header 416 128 1237 157