I have a list of values like this:
A
A1
A2
A3
A4
B
B1
B1
B3
C
C1
I need to have an array of formulas that looks up the instance of one of the
alpha characters (referencing the value in another cell), and then populate a
column of cells with the values that include the referenced Alpha for
example, if the reference is B, the lookups would populate my column of cells
with:
B
B1
B2
B3
The qty of values included with each alpha is variable.

Does anyone know an efficient way to do this?
Thanks in advance,
RDW