C11112331312111112111133133313331333133313223313331323133323321   >>    C1111233131211111211113313331333133313331322331333132313332332   <<    C11112331312111112111133133313331333133313223313331323133323323   >>      C11112331312111112111133133313331333133313223313331323133323322   >>