C11111333133313232233133313331333131133132221121111331311211231   >>    C1111133313331323223313331333133313113313222112111133131121123   <<    C11111333133313232233133313331333131133132221121111331311211233   >>      C11111333133313232233133313331333131133132221121111331311211232   >>