Removing space from string with regex -

i can find spaces in following string:

"____input abc" << please note there 4 spaces @ beginning of string

using regex:

[a-z] [a-z]

how can replace"t f" "tf" , "m a" "ma"? guess have use groups don't remember how. advice appreciated.

p.s. please note there 4 spaces @ beginning of string don't want remove them.

depending on language using, should have "replace" function

you have use capturing group, :

([a-z]) ([a-z])

and use function them in pattern want :

newstring = oldstring.replace("([a-z]) ([a-z])", "\1\2")

\x reference xth group of parenthesis

Deter