2) cipher 2- Mystery begun!

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

13

1

13

1

Last missing number is 10 ,i dunno trz some prob in aligning so i could not number it properly!So nw ma mystery starts!!!Try 2 crack dis!!!!i numbered 1,2 in order 2 get de ans 4rm 2 halfs.1-1st half,2-2nd half!

deciphered text: Cwepan:dierne sand!

_1_	_2_	_1_	_2_	_1_	_2_		:		_1_	_1_	_1_	_2_	_2_	_1_		_2_	_1_	_2_	_1_
11	4	9	11	13	13				10	5	9	9	13	9		8	13	13