equation 1491 2018 2019 2118
equation 1451 2372 2058 2421
equation 1347 947 2181 1098
equation 491 1316 1118 1482
equation 486 1020 1119 1073
text 371 326 1239 1006
text 1322 333 2190 929
text 1323 2128 2189 2333
text 1324 2447 2192 2642
text 1321 1115 2189 1984
text 371 1505 1242 2666
text 371 1087 1240 1288