text 881 1368 1554 1958
text 143 155 816 457
text 145 574 816 1222
text 883 389 1553 1226
text 147 1580 815 1958
equation 173 477 789 554
text 885 155 1553 277
equation 1123 1216 1552 1351
equation 284 1232 678 1299
equation 998 301 1437 380
equation 264 1355 814 1386
text 148 1314 422 1345
equation 148 1438 819 1550
text 148 1402 416 1428