[
    "You knock on the door to check if anyone is home.",
    "You knock on wood for good luck.",
    "You knock on your neighbor's door to borrow some sugar.",
    "You knock on the table to get someone's attention.",
    "You knock on the window to alert someone outside.",
    "You knock on the wall to see if it's hollow.",
    "You knock on the floor to check for structural integrity.",
    "You knock on the door before entering a room."
    "You knock on a friend's door to surprise them with a visit.",
    "You knock on the door to deliver a package.",
    "You knock on a friend's window to get their attention.",
    "You knock on a colleague's door to ask a quick question.",
    "You knock on the desk to express frustration.",
    "You knock on a coconut to open it.",
    "You knock on a melon to check its ripeness.",
    "You knock on a table to check its sturdiness.",
    "You knock on a wall to listen for hollow spots.",
    "You knock on a tree trunk to hear its sound.",
    "You knock on a rock to test its solidity.",
    "You knock on a metal door to hear its echo.",
    "You knock on a wooden door to hear its resonance.",
    "You knock on a window to see if it's locked.",
    "You knock on a door to ask for directions.",
    "You knock on a door to ask for help.",
    "You knock on a door to offer assistance.",
    "You knock on a door before entering a room.",
    "You knock on a table to emphasize a point.",
    "You knock on a wall to find a stud.",
    "You knock on a door to deliver a message.",
    "You knock on a door to check on a friend."
]