Inserting spaces between numbers and letters based on multiple conditions

[bauman312]

Hey all,
I'm trying to insert spaces between numbers and letters, but want to do so only with certain conditions in place. Each rule should be within its own formula, since the rules must follow a certain order to avoid any problems. Here are the rules in order:

Let "A" represent all letters and "1" represent all numbers

1. "AA1" -> "AA 1"
2. "A1A" -> "A 1A"
3. "1AA" -> "1 AA"
4. "1A " -> preserve. IF "A" = "N", "S", "E", "W", then "1A " -> "1 A "

Let me know if you can help me figure this one out.
Thanks!!

[martindwilson]

not sure what you mean for 4

[bauman312]

Sorry about that. For clarification, "A" represents any letter and "1" represents any number. In a situation where the letter in the sequence "1A " is "N", "S", "E", W", change it to "1 A ". In situations where the letter is not "N", "S", "E", "W", leave the sequence "1A " unchanged.

For example:
"3C " -> "3C " (unchanged)
"8W " -> "8 W " (changed)

[martindwilson]

is there a space "3C " -> "3C " (unchanged)
"8W " -> "8 W " (changed)
could you give some full length examples of each its easier to see