II. 请写出下列字母的左邻右舍，注意大小写形式
R_____T G_____I _____U_____ L_____N U_____W D_____F
n_____p p_____r _____v_____ i_____k f_____h x_____z
III. A. 请写出26个英文字母中占上中格的小写字母
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B. 请写出26个英文字母中占中间一格的小写字母
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