4) 亥

hai

9-11 pm

this character takes the shape of an animal's skeleton; when coupled with other characters, it means bone/frame

4ax) 刀

dao

knife

4a) 刻

ke

carve, cut;

moment, a quarter (of an hour)

bone (hai) + knife (dao)

carved (with a knife) writing on a bone

4bx) 言 词 话

yan, ci, hua

word

4e) 该

gai

should

word (yan) + bone (hai)

literally 'a word within a bone' - a warning that should be heeded

4c) 孩 孩子

hai, haizi

child

child (zi) + bone (hai)

bones of a child can be felt under the skin because young children are yet to gain much fat and muscle

4dx) 口

kou

cough

mouth (kou) + bone (hai)

coughing is so hard on the body

that the whole frame shakes