[[:digit:]]{2}
[[:xdigit:]]{2}
[[:lower:]]{2}
[[:upper:]]{2}
[[:alpha:]]{2}
[[:alnum:]]{2}
[[:blank:]]{2}
[[:space:]]{2}
[[:cntrl:]]{2}
[[:punct:]]{2}
[[:graph:]]{2}
[[:print:]]{2}
\n
.
[[:digit:]]{2}
[[:xdigit:]]{2}
[[:lower:]]{2}
[[:upper:]]{2}
[[:alpha:]]{2}
[[:alnum:]]{2}
[[:blank:]]{2}
[[:space:]]{2}
[[:cntrl:]]{2}
[[:punct:]]{2}
[[:graph:]]{2}
[[:print:]]{2}
\n
.
::
::
::
