C11111333133313232233133313331333131121133131133133313231123311211321   >>    C1111133313331323223313331333133313112113313113313331323112331121132   <<    C11111333133313232233133313331333131121133131133133313231123311211323   >>      C11111333133313232233133313331333131121133131133133313231123311211322   >>