Bbc
2 l
1
1000 
1000
400
100
+63
1000
1000
400
100
+44
3
3
1
1000
1000
400
100
+106
1
1000
1000
400
100
+72
1000
1000
400
100
+96
1000
1000
400
100
+36
1000
1000
400
100
+109
1000
1000
400
100
+89