C11112331312111112111133133313331333133313223223311211331313321   >>    C1111233131211111211113313331333133313331322322331121133131332   <<    C11112331312111112111133133313331333133313223223311211331313323   >>      C11112331312111112111133133313331333133313223223311211331313322   >>