text 851 1797 1508 1994
text 151 1033 808 1994
text 851 622 1506 1676
text 153 897 805 962
equation 994 1705 1503 1769
equation 174 811 803 865
equation 334 958 803 998
text 151 191 807 788
algorithm 860 192 1506 572
header 396 118 1263 157