Alert: ('', '') => ''
Alert: ('', '123') => ''
Alert: ('??', '') => ''
Alert: ('??', 'f2') => 'f2'
Alert: ('??', 'f27') => 'f2'
Alert: ('XXX', '') => ''
Alert: ('XXX', '1afp3.') => '1af'
Alert: ('XXX', '-1Afp3.d33F$') => '1Af'
Alert: ('AAA', '') => ''
Alert: ('AAA', '-1Afp3.') => 'Afp'
Alert: ('AAA', '-1Afp3.d33F$') => 'Afp'
Alert: ('999', '') => ''
Alert: ('999', '-1Afp3.') => '13'
Alert: ('999', '-1Afp3.d33F$') => '133'
Alert: ('9*9', '') => ''
Alert: ('9*9', '-1Afp3.') => '1Afp3.'
Alert: ('[*]X', '-1Afp3.') => '[-1Afp3.]'
Alert: ('<*', '-1Afp3.d33F$') => '-1afp3.d33f$'
Alert: ('>*', '-1Afp3.d33F$') => '-1AFP3.D33F$'
Alert: ('<[AAAAAAAAAAA]', '-1Afp3.d33F$') => '[afpdf]'
Alert: ('>[AAAAAAAAAAA]', '-1Afp3.d33F$') => '[AFPDF]'
Alert: ('<[XXXXXXXXXXX]', '-1Afp3.d33F$') => '[1afp3d33f]'
Alert: ('>[XXXXXXXXXXX]', '-1Afp3.d33F$') => '[1AFP3D33F]'
Alert: ('<[XXXXXXXXXXX]', '-1Afp3.d33F$') => '[1afp3d33f]'
Alert: ('>[???????????]', '-1Afp3.d33F$') => '[-1AFP3.D33F]'
Alert: ('<[???????????]', '-1Afp3.d33F$') => '[-1afp3.d33f]'
Alert: ('\>[\**]', '-1Afp3.d33F$') => '>[*-1Afp3.d33F$]'
Alert: ('\>[\\**]', '-1Afp3.d33F$') => '>[\-1Afp3.d33F$]'
Alert: ('=*', '-1Afp3.d33F$') => '-1Afp3.d33F$'
Alert: ('<??????=*', '-1Afp3.d33F$') => '-1afp3.d33F$'
Alert: ('>??????=*', '-1Afp3.d33F$') => '-1AFP3.d33F$'
Alert: ('>??????<*', '-1Afp3.d33F$') => '-1AFP3.d33f$'
Alert: ('clams', '-1Afp3.d33F$') => 'clams'
Alert: ('cl9ms', '-1Afp3.d33F$') => 'cl1ms'
Alert: ('cl\9ms', '-1Afp3.d33F$') => 'cl9ms'