……………………………………………… ……………………………→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→ …… ……………………………→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→ …………………………………………………………………………………………………………………………………………………………………………………………………………→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→ ……………………………→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→→_→