This invention discloses a set of building elements comprising at least a first member and at least a second member; said first member comprises at least a first slot; and said second member comprises at least a second slot; where at least one first slot is joined with at least one second slot in a slidable interconnection, where at least one first slot is part of a first connection element and said at least one second slot is part of a second connection element which connection elements comprise at least a first stabilising element arranged along said first connection element and at least a second stabilising element arranged along said second connection element, said at least first stabilising element comprises a first sloping edge and said at least second stabilising element comprises a second sloping edge, where said first sloping edge engages with said second sloping edge during interconnection between said first member and said second member.
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