INTRO: e------------------------------------------------------- b------------------------------------------------------- g------------------------------------------------------- d------------------------------------------------------- a------------------------------------------------------- E-12-12-11-11-10-10-9-9-12-12-11-11-10-10-9-9-12-12-11-11 e------------------------------------------------------- b------------------------------------------------------- g------------------------------------------------------- d------------------------------------------------------- a------------------------------------------------------- E-10-10-9-9-12-12-11-11-10-10-9-9-12-12-11-11-10-10-9-9- e------------------------------------------------------- b------------------------------------------------------- g------------------------------------------------------- d------------------------------------------------------- a------------------------------------------------------- E-12-12-11-11-10-10-9-9-12-12-11-11-10-10-9-9-12-12-11-11 e------------------------------------------------------- b------------------------------------------------------- g------------------------------------------------------- d------------------------------------------------------- a------------------------------------------------------- E-10-10-9-9-12------------------------------------------