The shell bone script of character Reach is
The top is a person, the bottom is a hand. To reach and catch is the original meaning of the character.
The bronze script of the character is
similar to the shell bone script: the top is a person, the bottom is a hand that has caught the person's leg.
The big seal script of the character is
similar to older scripts, the low part of the leg disappeared. We could imagine that the hand blocked the leg.