图1-16是用火柴摆成的猪,想想看,如何移动2根火柴,使它变成四腿张开的猪?
图1-16 eeSfH3mkSJxrGUrFg6/BNzZMULQ0Yp8ELdMhogBLfYUFI5hY9mtr6GLXpnfFgk30