C1111133313331323223313331333133313113313222112111133131121112121   >>    C111113331333132322331333133313331311331322211211113313112111212   <<    C1111133313331323223313331333133313113313222112111133131121112123   >>      C1111133313331323223313331333133313113313222112111133131121112122   >>