Set one starts in a 1-3-1 type set with the point guard (1) at the top of the key, the post (5) in the high post and other perimeters (2,3,4) on the wings and low block. The bigger perimeter player (4) is the one who is on the low block.
The set starts with the player on the block (4) and the wing (2) on his side interchanging with the wing going to the short corner. The point (1) passes to the player coming up from the block on the interchange (4) and cuts through to the backside block. Once the point is through the high post (5) steps out and receives the pass from the wing (4). The backside wing (3) down screens for the point (1) who comes to the wing. The player who set the down screen (3) fills to the deep corner.
In set #2, which I like better, it started in an odd looking set. The point (1) and off guard (2) start high with the point (1) at the top of the key and the off guard (2) starts high and off the laneline. One wing (3) starts in the deep corner opposite the off guard (2). The other wing (4) starts free throw line extended on the off guard's (2) side. The post (5) starts at the high post again.
To start the play the off guard (2) cuts and stacks with the post at the middle of the free throw line. The wing on the guard's side (4) raises up and receives the ball. The point (1) corner cuts after he makes the pass.
The player with the ball on the wing (4) starts to dribble to the top. The post (5) sets a backscreen for the off guard (2) who cuts to the block. He fills the ballside corner and the point (1) moves from he corner up to the wing replacing the wing (4) who's dribbling. After setting the screen, the post (5) immediately cuts up like he wants the ball and then backcuts to the rim. The player with the ball (4) keeps dribbling across the key. The backside deep corner player (3) raises up like he's going to get the pass and then goes backdoor for a layup.