text 878 156 1554 1958
text 147 274 816 1035
text 147 1454 816 1952
text 147 1141 814 1201
text 147 1346 813 1377
text 148 154 815 214
equation 148 1220 831 1309
equation 167 1048 795 1125
equation 152 1396 809 1436
equation 210 231 751 258