1. Design a circuit with three bulbs in parallel so that one switch will switch them all on or off at once.
2. Design a circuit with three bulbs in parallel so that each has an individual switch to switch it off or on.
3. Design a circuit with three bulbs in parallel so that each has an individual switch to switch it off or on and there is a master switch that can switch them all off.
4. Design a circuit with three bulbs in series so that one switch will switch them all on or off at once.
5. Design a circuit with three bulbs in series so that one switch will switch one of them on or off.

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