C11111333133313232233133313331333132313331323321313331333131211111133233313221   >>    C1111133313331323223313331333133313231333132332131333133313121111113323331322   <<    C11111333133313232233133313331333132313331323321313331333131211111133233313223   >>      C11111333133313232233133313331333132313331323321313331333131211111133233313222   >>