Possible Clues:

• A bed to rest on for Mum, Troy and Brian
• Mould on rug found by Brian
• Before nine the broken tram gets to be rocky (6)
• Arrangement of numbers: dull run ending with nine
• Mathematical array of numbers
• Array of rows and columns
• Mould for casting or shaping
• After dull run football team climbs table
• Mould for, eg, record
• There are nine under the smashed tram in its original setting