Group Workorder(?<Workorder>\d{4}) \d{4}a digit, repeated exactly 4 times
,the literal , (4410 / 548 / 2C16)
Group ExternalUnit(?<ExternalUnit>\d{7}) \d{7}a digit, repeated exactly 7 times
,the literal , (4410 / 548 / 2C16)
Group Pieces(?<Pieces>\d) ,the literal , (4410 / 548 / 2C16)
Group SubItem(?<SubItem>\d+$) \d+a digit, repeated at least once
$end of string, or before its final line terminator