The schematic diagram and construct a wiring connection so that bulb can be controlled by 3 switches (2 SPDT, 1 DPDT) TABLE MUST BE FOLLOWED
(SPDT1, DPDT, SPDT2, Bulb)
Down | Down | Down | off
Down | Down | Up | on
Down | Up | Down | on
Down | Up | Up | off
Up | Down | Down | on
Up | Down | Up | off
Up | Up | Down | off
Up | Up | Up | on