Well part of what you want is possible with crunch, but not all..
To have 3 characters (including space) prefixed and suffixed to a word, in this case "password"
you could do that as follows ;
This will fix the word password with the variables only being the first 3 and last 3 charactersCode:./crunch 14 14 -f charset.lst mixalpha-numeric-all-space -t @@@password@@@
so not creating any permutations of the word "password".