C11111333133313232233133313331333131133132233133313113313232233133321321   >>    C1111133313331323223313331333133313113313223313331311331323223313332132   <<    C11111333133313232233133313331333131133132233133313113313232233133321323   >>      C11111333133313232233133313331333131133132233133313113313232233133321322   >>