Brickwork

Enter the solutions to the clues in their numbered layers of the wall. Each word must be an anagram of its neighbours, plus or minus one letter.

1 Young tree 2 Use semaphore 3 Slow-moving garden mollusc 4 Bart Simpson’s sister 5 Monica —, author of Brick Lane 6 Radio code word for the letter L 7 Assert one’s right or title to 8 Desire to do harm 9 Relating to health