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 Monarch’s ceremonial staff 2 Nag continually 3 Guide a car 4 Relax, take a break 5 Matching group, or clique 6 Bird’s home 7 Pebble 8 Trustworthy, or genuine 9 Abbreviate