text 151 1710 807 1994
equation 164 1601 805 1711
equation 176 1435 805 1545
text 151 1554 805 1580
equation 851 1858 1483 1894
text 847 192 1508 1844
text 149 190 810 1410
text 848 1932 1512 1990
header 510 130 1146 155