Remove/Find files based on position pattern

Hi All,

Please help me to find or remove files based on position based search pattern.

file1.txt:
aaabbbccc
dddeeefff
iiijjjkkk

file2.txt:
lllmmmnnn
ooopppqqq
rrrsssttt

file3.txt:
uuuvvvwww
xxxeeeyyy
zzzcccooo

From the above files, I like to delete the files that have "eee" in position 4-6. The result will be file1 and file3 deleted. I need your expertise advice on this.

Appreciate your help.

Thanks

Kumar

What did you do to try to solve the problem yourself?