Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to make a simple home hydroponic garden [title] Cut out a piece of plywood measuring 1x1.5 m, and 2.5 cm thick. [step] This will be used as the bottom of the hydroponic bed. [title] Cut two pieces of lumber 15x150 cm, and 5 cm thick.

Ending1: [step] Cut a further two pieces of lumber 15x85 cm, and 5 cm thick. These will be used as the siding of the hydroponic bed. Ending2: [step] The heavier each piece is the bigger the bed will be. [title] Cut two pieces of table lumber 20 cm in diameter. Ending3: [step] These will be used as the bottom of the bed. [title] Take lengths of wood 2x50 cm. Ending4: [step] These will act as additional boards to build the outer perimeter of the hydroponic garden. [title] Mark your perimeter on the plywood with a pencil.

Answer format: ending1/ending2/ending3/ending4