Hint: Words using these letters: burglar
The answer to this puzzle is:
1. RUB
2. RUG
3. BLUR
4. BURR
5. GARB
6. GRAB
7. BURG
8. BRAG
9. GRUB
10. RURAL
11. LAG
12. LUG
13. RAG
2. RUG
3. BLUR
4. BURR
5. GARB
6. GRAB
7. BURG
8. BRAG
9. GRUB
10. RURAL
11. LAG
12. LUG
13. RAG