C1111121111331311211331333133313331333133313232212111112111133133313112121   >>    C111112111133131121133133313331333133313331323221211111211113313331311212   <<    C1111121111331311211331333133313331333133313232212111112111133133313112123   >>      C1111121111331311211331333133313331333133313232212111112111133133313112122   >>