| " " ~ [[:blank:]] | |
| " " ~ [[:space:]] | |
| \a !~ [[:blank:]] | |
| \a !~ [[:space:]] | |
| \b !~ [[:blank:]] | |
| \b !~ [[:space:]] | |
| \f !~ [[:blank:]] | |
| \f ~ [[:space:]] | |
| \n !~ [[:blank:]] | |
| \n ~ [[:space:]] | |
| \r !~ [[:blank:]] | |
| \r ~ [[:space:]] | |
| \t ~ [[:blank:]] | |
| \t ~ [[:space:]] | |
| \v !~ [[:blank:]] | |
| \v ~ [[:space:]] |