C1111233131211111211113313331333133313331122212111113331311213223331   >>    C111123313121111121111331333133313331333112221211111333131121322333   <<    C1111233131211111211113313331333133313331122212111113331311213223333   >>      C1111233131211111211113313331333133313331122212111113331311213223332   >>