°fe³f AÃfSX ½ff»fZ Vf¶QûÔ IYf A·¹ffÀf IYSmÔX- BX + ²fXX + SX = ¦fX + »fXX + °fX = ÀfX + ¸fXX + Óf = ·fX + ªfXX + ³fX = ¸f + MXXX + IYX = ¶fX + WXXX + ³fX = ¦fX + SXXX + ¸fX = ³fX + ¹fXX + ³fX = ÀfX + SXXX + »fX = ÀfX + RYXX + »fX = 16