Please choose the correct ending to complete the given sentence: Rock climbing: Man clips the rope to the silver caribiner. man

Ending1: welds a thin steel wire into the silver viselike machine. Ending2: swings in the swing, grabs the silver rope and runs. Ending3: crawls up the white-colored wall. Ending4: jumps, flips and holds the rope.

Answer format: ending1/ending2/ending3/ending4