[BLK-504] 1 part 1

[BLK-504] 1 part 2

[BLK-504] 1 part 3

[BLK-504] 1 part 4

[BLK-504] 1 part 5

[BLK-504] 1 part 7

[BLK-504] 1 part 8

[BLK-504] 1 part 9

[BLK-504] 1 part 10

[BLK-544] part 11

[BLK-533] part 11

[BLK-268] part 11