C11111333133313232233133313331333131133132313311211111133132332221   >>    C1111133313331323223313331333133313113313231331121111113313233222   <<    C11111333133313232233133313331333131133132313311211111133132332223   >>      C11111333133313232233133313331333131133132313311211111133132332222   >>