Level59
Cipher
Each line is the line above it with one more cipher on top. Undo all six.
6FQFWFPYOYRYCGPEOCVFJQVJL
5LJVQJFVCOEPGCYRYOYPFWFQF
4LVP CJOF EVPWG QCF YJRQ YFOFY
3OEK XQLU VEKDT JXU BQIJ BULUB
2LBH UNIR SBHAQ GUR YNFG YRIRY
1 is the top of the stack and 6 is what you are looking at.