A * will match anything unless a pattern of a word or several words is matched
A _ will match any, even if the pattern of a word or several words can match
<pattern>BYE _</pattern> , <pattern>BYE *</pattern> , <pattern>BYE _</pattern> <pattern>BYE * SEE YOU</pattern>, BYE * .
_ , _ , .
<pattern>_ A COUPLE OF WORDS *</pattern> <pattern>_ A COUPLE OF WORDS</pattern> - _, . .