证人席

• 言(word; speech)RADICAL
• 登(climb; ascend)PHONETIC

Speaking up and standing before people with words confirms the truth.

• 人(person; human (pictographic))ASSOCIATIVE

The character 人 depicts a person standing with legs spread wide apart for stability.

• 广(roof; structure)RADICAL
• 廿(twenty; many interlaced strands)ASSOCIATIVE
• 巾(cloth; towel)ASSOCIATIVE

A mat is a woven cloth made from many fibers spread under the roof of a house to sit on.