=1

了

liǎo

to finish (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget") (literary) (usually followed by a negative such as 无 wú or 不 bù) completely (not); entirely (not); (not) in the least to understand clearly (variant of 了 liǎo)

=1

了

liǎo

(of eyes) bright clear-sighted to understand clearly

=2

却

què

old variant of 却 què

=2

却

què

but yet however while to go back to decline to retreat nevertheless even though