The sequence SMHDM does not follow a clear pattern based on alphabetical order or any common sequence rule. Without additional context or information, it is difficult to determine what letter comes next in the sequence. It is possible that the sequence is random or based on a specific pattern not immediately evident.
Y for YEAR
I is the next letter.
a
A
The next letter is U.
s
In the alphabet the letter that comes after Q is the letter R. The letter that comes before Q would be P.
A
HS
l
The next letter is U.
p