C11111333133313232233133313331333131133131211111333132233323221   >>    C1111133313331323223313331333133313113313121111133313223332322   <<    C11111333133313232233133313331333131133131211111333132233323223   >>      C11111333133313232233133313331333131133131211111333132233323222   >>