C11111333133313232233133313331333131133132313311211111211111333131311223112321   >>    C1111133313331323223313331333133313113313231331121111121111133313131122311232   <<    C11111333133313232233133313331333131133132313311211111211111333131311223112323   >>      C11111333133313232233133313331333131133132313311211111211111333131311223112322   >>