Nomination of two songs from the same {item} in one week	Amount of time following a non-win of (a song from) a particular {item}; where the {item} is prohibited	Amount of time following a win of (a song from) a particular {item}; where the {item} is prohibited -- subsequent wins of said {item} are added recursively
{item}			1st place	2nd place	3rd place
Artist	allowed	no restrictions	none	none	none
Game/Album	PROHIBITED	no restrictions	12 weeks	8 weeks	4 weeks
Song		no restrictions	INFINITE	Indefinite	Indefinite