Help for this page

Select Code to Download

Select or download this

s{([^Z])?(Z*)$}{
    local $_ = ( $1 // 'Z' ) . $2;
    tr/BCDFGHJ-NP-TV-Z/CDFGHJ-NP-TV-ZB/;
    $_
}e;

Select or download this

s{(([^B])|B)(B*)$}{
    local $_ = ( $2 // '' ) . $3;
    tr/CDFGHJ-NP-TV-ZB/BCDFGHJ-NP-TV-Z/;
    $_
}e;