C1111121111331311211331333133313331313331323223313311232313112121   >>    C111112111133131121133133313331333131333132322331331123231311212   <<    C1111121111331311211331333133313331313331323223313311232313112123   >>      C1111121111331311211331333133313331313331323223313311232313112122   >>