1.
Letters are intermixed with random numbers. The numbers tell how many letters to skip to reach the next letter: A2D5J ... A (BC) D (EFGHI) J.
2.
This is "StarSpangled Banner" in reverse.
3.
ABDFIMQVBH letters are 1 2 2 3 4 4 5 6 6 apart, next is 7 away.
4.
The letters are placed topbottom in a table with three rows:
B 
A 
N 
K 
R 
U 
D 
E 
F 
G 
H 
I 
Q 
S 
V 
W 
X 
Z 
The top row will spell BANKRUPTCY, so the next letter is P
5.
This is MARY HAD A LITTLE LAMB, X replaces the space character. This has been broken into groups of 5 letters.
6.
This contains two interleaved sequences, one going 2 (MKIG ...) and the second +2 letters: NPRT ...)
7.
This sequence interleaves JINGLE BELLS and DECK THE HALLS, with the spaces removed before interleaving.
8.
If the letter location is divisible by 3 or 4, skip the letter.
A(1) B(2) skip C(3) skip D(4) E(5) skip F(6) G(7) skip H(8) skip I(9) J(10) etc.
9.
This sequence lists 3 letters in order and then skips to another letter. Then that letter and the three after it are used. The rule for jumping is to jump 0, then 1, then 2, etc:
So it's: ABC, jump 0 to C, CDEF, jump 1 to G, GHIJ, jump 2 to L, LMNO, ...
10.
Lists states. The next state begins with the next to last letter of previous oregOn ohIo ioWa wyomiNg N...
