核心 he xin qi kan shi bu shi yi nian yi ping
核心 qi kan yi nian shi he xin yi nian bu shi
同一种 文字 lun wen yi bu tong huo tong yi zhong wen zi zai tong yi qi kan
e i shi bu shi yi ji qi kan
一区 p c c p qi kan shi bu shi yi qu
s c i shi bu shi yi lei qi kan