C1111133313331323223313331333133313112113313113313331323222112121   >>    C111113331333132322331333133313331311211331311331333132322211212   <<    C1111133313331323223313331333133313112113313113313331323222112123   >>      C1111133313331323223313331333133313112113313113313331323222112122   >>