C11111333133313232233133313331333131133132313311211111221311321   >>    C1111133313331323223313331333133313113313231331121111122131132   <<    C11111333133313232233133313331333131133132313311211111221311323   >>      C11111333133313232233133313331333131133132313311211111221311322   >>