castlevania 1 nes game genie warp codes

i made game genie codes to warp to later levels.
beat stage 3 boss (bat boss) and it'll take you to where ever you want.

you must put in codeA, then only one of codeB for which stage to warp to.

codeA: XXXGTYVZ

codeB:

5 IEXGYNPZ
6 TEXGYNPZ
7 YEXGYNPZ
8 AEXGYNPX
9 PEXGYNPX
10 ZEXGYNPX
11 LEXGYNPX
12 GEXGYNPX
13 IEXGYNPX
14 TEXGYNPX
15 YEXGYNPX
16 AOXGYNPZ
17 POXGYNPZ
stage 18 (dracula) ZOXGYNPZ