Just some codes - probably not working anymore. I just save this list here. Since I don't like losing things, and I probably spent some time on these in past :p

Edit:
Rammus:
NEX9XN9VXFMPYD
NEAYJ3HJDMM7ER 
NEQGY9YR9KL9C2 

Rammus Code
NEY_9P3YW2FXHQ
Graves Code
NENCPE_JVCH436

Y6EMU9TZFX4M 

Pre-edit:
RAMMUS
NE3TQ3LR6MAYYR
NEWFTA3EJZ9T7D
NEMQC3MNMMXHCR
NEUT39RDDKWKY2
LAR73W9JGM3J
DHKQVEKUJ6KL 
PP467WR4jGWK
NECWK36KLMRKU_
NEEGQA933ZQK_D
NEUYKPVL42VGPQ


Rammus or Graves:
NEK6T4REAQYAQX
NEVPKEP66VQ7YU
NETEQP7C72HE9Q
NE39VEHCYCEEE6
NEGVXWVMN26LW7
NEXL3VGNHNH3

GRAVES
NEKC4TAKRC7UN6
NEWTNHNK7U3MLC
NAUHXACX3CLLUE
NAT9AA9UHRJ9DH
NAHFN7UY4NPGEU
NEYG9DUTKZFKXY
NEH4GTX7GCULM_
NEVEKHY6JU_LDC
NEUKGETVDCHQY6
ZP2O79L9IHAD
NADE9L9CG6VPWQ
NAQU696R4WUCEZ
CWA496EWPATW
K3JCP9LAXW3_
6JYV7GHMC6XD
NA6APCCLGZQCE7

JAX:
K7H645ABVH28DRD9
K7H645A6VH28DRD9
JCF7WB53KKEV4BLQ
W4MGZENFGCNU44CR
JUU8XKJU828S7TRQ
UCVX7W7GCXV3

Unknown:
M7CGLV2WT2XD
CLHNDUKUJEXAX6T4QXGW
FHKJRYJFT7FLKEKFXEFQ
FL3NU36VN77WUVUD4NQC 
KAH6FQ3GDCKRLDDRXZ7X
4WRVQCG7W9HE 
w2r1s40wh7b
kou8jwniiL7n
HNY4RPMATX37VMFQ9KWJ
X6NTRO46PWTHT4NNETX6
UVYTTKT3VWA7Q94VCG3C

sivir:
M6MJJQA2NF9Y
QY7RVXAPMXHX
UUHANERQMAQT
4KTAL6H6ARXX
6WGHVT9M3WHQ

SINGED:
FGCJEDW24KLY
X7Q91KVP9KW1
UWQEEFVWWUVD

tf:
WP929MAXCWDR
6MXCWT3X6DHD
KHGKPKCJ7FNM

nasus:
NAETTAAKQRH6NH
UCVX7W7GCXV3
GKYXC7NG4A63
397HKPMT7PL6

sona:
A3N4THWWNX47
SAF67ASD9C