关于四个固定选项(abcD)，每个选项有三个选项(ABC)。

如下(第一个是对比度，第二个是锐度，以此类推)

aaaa，aaab，aaac，aaba，aabb，aabc，aaca，aacb，aacc

abaa，abab，abac，abba，abbb，abbc，abca，abcb，abcc

acaa，acab，acac，acba，acbb，acbc，acca，accb，accc

咩，咩，咩，咩，咩，咩，咩，咩，咩，咩，咩

bbaa，bbab，bbac，bbba，bbbb，bbbc，bbca，bbcb，bbcc

bcaa，bcab，bcac，bcba，bcbb，bcbc，bcca，bccb

caaa，caab，caac，caba，cabb，cabc，caca，cacb，cacc

cbaa，cbab，cbac，cbba，cbbb，cbbc，cbca，cbcb，cbcc

ccaa，ccab，ccac，中华公所，ccbb，ccbc，ccca，cccb，cccc