C11112331312111112111133133313331333132322121111331323132111121   >>    C1111233131211111211113313331333133313232212111133132313211112   <<    C11112331312111112111133133313331333132322121111331323132111123   >>      C11112331312111112111133133313331333132322121111331323132111122   >>