Rebuild Me - Lite: Block puzzle

In Rebuild Me, the goal is to bring the entire set of blocks from top to bottom. And when you build the bottom blocks, you are allowed to use only the predefined set of shapes. The player who is able to rebuild the complete set of blocks at the bottom using the geometric shapes provided and within the specified time limit is the winner.

Rules:
Each geometric shape is composed of four blocks.
Player can use only the geometric shapes provided in the play area.
Each shape has a counter assigned. This specifies the number of times, that geometric shape can be used in solving the puzzle.
Blocks will get released from top and fall to bottom only if there are no other blocks blocking its way.
There is a timer set for each puzzle.

Selecting blocks:
Select 4 blocks which matches the predefined geometric shapes and which has a counter value greater than 0.
These blocks will get released and fall to bottom if there are no other blocks blocking its way.
The shapes selected should be in a logical way as the number of individual shapes available to select is limited and different for each shape.

Game over:
The game is over when there are no blocks left at the top or in case of timeout.