†对称操作:(1)x个1,x个2,x个三,x个4; (2) −x个1, −x个2,x个三+1/2, −x个4; (3) −x个1,x个2, −x个三+1/2,−x个4+1/2; (4)x个1, −x个2, −x个三,x个4+1/2;(5) −x个1, −x个2, −x个三, −x个4; (6)x个1,x个2, −x个三+1/2,x个4; (7)x个1, −x个2,x个三+1/2,x个4+1/2; (8) −x个1,x个2,x个三,−x个4+1/2; (9)x个1+1/2,x个2+1/2,x个三,x个4; (10) −x个1+1/2, −x个2+1/2,x个三+1/2, −x个4; (11) −x个1+1/2,x个2+1/2, −x个三+1/2, −x个4+1/2; (12)x个1+1/2, −x个2+1/2, −x个三,x个4+1/2; (13) −x个1+1/2, −x个2+1/2, −x个三, −x个4; (14)x个1+1/2,x个2+1/2, −x个三+1/2,x个4; (15)x个1+1/2, −x个2+1/2,x个三+1/2,x个4+1/2; (16) −x个1+1/2,x个2+1/2,x个三, −x个4+1/2.
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