highlighted every time a letter or word is entered

[zeeman84]

I would like to have the cells in A column highlighted every time a letter or word is entered apart from the letters b, k and also if there are blank cells they should be ignored. Please note i do not know VBA coding please help me some one.

k
b
b3
e
k
k1
b
kk
k
v2

 

[etaf]

this may work
=IFERROR(SEARCH("B",A2,1),IFERROR(SEARCH("K",A2,1),0))
searching for a B/b or a K/k anywhere in the cell

Book1
	A	B
2		0
3	fredb	5
4		0
5	1	0
6		0
7		0
8	k	1
9		0
10		0
11		0
12		0
Sheet1

Cell Formulas
Range	Formula
B2:B12	B2	=IFERROR(SEARCH("B",A2,1),IFERROR(SEARCH("K",A2,1),0))

Cells with Conditional Formatting
Cell	Condition		Cell Format	Stop If True
A2:A18	Expression	=IFERROR(SEARCH("B",A2,1),IFERROR(SEARCH("K",A2,1),0))	text	NO