C11111211113313112113313331333133313331333132212111133133313331323231323111   >>    C1111121111331311211331333133313331333133313221211113313331333132323132311   <<    C11111211113313112113313331333133313331333132212111133133313331323231323113   >>      C11111211113313112113313331333133313331333132212111133133313331323231323112   >>