1n+ 1j 1z v 1l+ v 1j v 1z 1Un+ 1j 1z V 1l+ V 1j V 1z F 1l+ F 1j F 1z 1Xn+ 1j 1z 6 1l+ 6 1j 6 1z 1l+ 1j 1z & 1\n+ & 1j & 1z ~ 1m+ ~ 1j ~ 1z 1o+ 1j 1z n 1Bm+ n 1j n 1z 1xn+ 1j 1z 1)m+ 1j 1z 1n+ 1j 1z v 1