text 851 966 1507 1994
text 151 1926 805 1994
equation 868 761 1505 941
equation 217 1722 805 1910
text 150 482 808 1699
text 849 191 1507 734
equation 140 243 805 447
text 154 186 508 219
header 494 124 1159 161