old_contents: 
  from regs         import Reg, RegEn, RegRst, RegEnRst
  
  from arith        import Adder, Subtractor, Incrementer
  from arith        import ZeroExtender, SignExtender
  from arith        import ZeroComparator, EqComparator, LtComparator, GtComparator
  from arith        import SignUnit, UnsignUnit
  from arith        import LeftLogicalShifter, RightLogicalShifter
  
  from Mux          import Mux
  from Decoder      import Decoder
  from RegisterFile import RegisterFile
  from Crossbar     import Crossbar
  from PipeCtrl     import PipeCtrl
  from arbiters     import RoundRobinArbiter, RoundRobinArbiterEn
  
  from queues import (
    SingleElementNormalQueue,
    SingleElementBypassQueue,
    NormalQueue,
    SingleElementPipelinedQueue,
    SingleElementSkidQueue,
  )
  
  
new_contents: 
  from regs         import Reg, RegEn, RegRst, RegEnRst
  
  from arith        import Adder, Subtractor, Incrementer
  from arith        import ZeroExtender, SignExtender
  from arith        import ZeroComparator, EqComparator, LtComparator, GtComparator
  from arith        import SignUnit, UnsignUnit
  from arith        import LeftLogicalShifter, RightLogicalShifter
  
  from Mux          import Mux
  from Decoder      import Decoder
  from RegisterFile import RegisterFile
  from Crossbar     import Crossbar
  from PipeCtrl     import PipeCtrl
  from arbiters     import RoundRobinArbiter, RoundRobinArbiterEn
  
  from queues import (
    SingleElementNormalQueue,
    SingleElementBypassQueue,
    NormalQueue,
    SingleElementPipelinedQueue,
    SingleElementSkidQueue,
    TwoElementBypassQueue,
  )
  
  
subject: add TwoElementBypassQueue entry