Here are 3 different sayings encoded using the same code:
SMF YMFAH JQ SMF VMFAH UFW SMF VZE'W NM SMF YME'W.
G: YTCBC'N WTC AMEC BZEKCB WZDC TJN KZBUZKC?
Z: WM WTC HFXL, WM WTC HFXL, WM WTC HFXL HFXL HFXL!
G: YTZW'N WTC LJED LZEWTCB NZS YTCE TC NWCLN ME ZE ZEW TJAA?
Z: HCZH ZEW, HCZH ZEW, HCZH ZEW HCZH ZEW HCZH ZEW...
G: HM SMF DEMY YTZW WTC HCZWT BZWC ZBMFEH TCBC JN?
Z: MEC LCB LCBNME.
I give up!