how to connect 3 12vdc bulb ussing relay timers and anything that works..circuit working time for ap

Hhey ghuyz I need ur help on this...i've bEen thinking since morning..my brain server is shut down..i've got 3 dc 12v bulbs..i need a circuit that at first stage when switched on, only bulb A comes on then after 5 seconds it goes off and only bulb B comes on then after another 5 seconds bulb B goes off and only bulb C comes on..i've got a 12v dc relay (double pole double throw), 12v dc timer (double pole double throw) ..possibly logic gates and diodes if needed..all this should work within 10 secs.