Get Me Out Solutions: Level 21

Solution:
21 U; 32 UL; 33 LU; 34LL; 23 D; 12 RR; 22 UL; 32 UU; 31 RU; 41 U; 43 LL; 44 LL; 33 D; 22 RR; 21 RR; 31 U; 42 UL; 43 L; 54 UU; 53 RU; 52 RR; 42 D;

Read this blog post for info about the notation...