Get Me Out Solutions: Level 55

Solution:
54 LL; 44 DL; 34 DD; 24 DD; 23 R; 32 UU; 33 LU; 31 R; 41 U; 42 L; 34 L; 54 U; 53 R; 43 D; 23 D; 12 RR; 22 UR; 11 R; 31 UU; 32 LU; 41 U; 52 UL; 43 L; 44 LD; 33 D; 13 DR; 12 R; 21 RU; 31 U; 42 U; 51 R; 41 D; 32 L; 43 L; 54 UU; 53 RU; 52 RR; 42 D;

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