Formula ? + ? = ?

2000 = 1 + 1PG = L

2003 = 1 = L

2006 = 1 + 1 = L

2010 = 1 + 1 + 1 = L

2010 = 1 + 1 = @ ≠ TL

? = 1 + 1 + 1 +1 = ??

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