Match the musical descriptions of form to the corresponding covers of Roll Over Beethoven.
*12-bar intro followed by 9 verses in 12-bar blues form
*synthesizer intro followed by 12-bar blues form that breaks down into free dialogue between instruments
*6-bar intro followed by 9 verses in 12-bar blues form: 2 verses are instrumental, two sets of verse are repeated
*Electric Light Orchestra (Harvest, 1973)
*Chuck Berry (Chess, 1956)
*Carl Perkins (Sun, 1957)