equation 1319 350 2270 456
equation 219 2639 1163 2688
equation 491 2400 873 2454
equation 491 2400 873 2454
text 220 238 1228 2358
text 1323 238 2324 310
text 1323 485 2326 3010
text 222 2723 1225 3010
text 223 2484 1226 2605