C11112331312111112111133133313331333133313331333133313132313112121   >>    C1111233131211111211113313331333133313331333133313331313231311212   <<    C11112331312111112111133133313331333133313331333133313132313112123   >>      C11112331312111112111133133313331333133313331333133313132313112122   >>